【单选题】【消耗次数：1】
若<imgwidth="56"height="22"v:shapes="_x0000_i1197"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image240.png">，则<imgwidth="16"height="18"v:shapes="_x0000_i1198"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image220.png">的特征值为（）
①
<imgwidth="22"height="18"v:shapes="_x0000_i1199"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image242.png">或<imgwidth="10"height="18"v:shapes="_x0000_i1200"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image244.png">
②
<imgwidth="14"height="20"v:shapes="_x0000_i1201"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image246.png">或<imgwidth="10"height="18"v:shapes="_x0000_i1202"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image244.png">
③
<imgwidth="14"height="20"v:shapes="_x0000_i1203"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image246.png">
④
<imgwidth="10"height="18"v:shapes="_x0000_i1204"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image244.png">
参考答案：
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相关题目
【单选题】
已知<imgwidth="34"height="22"v:shapes="_x0000_i1231"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image291.png">均为<imgwidth="14"height="16"v:shapes="_x0000_i1232"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image293.png">阶方阵且<imgwidth="18"height="18"v:shapes="_x0000_i1233"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image285.png">与<imgwidth="18"height="18"v:shapes="_x0000_i1234"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image295.png">相似，若<imgwidth="56"height="22"v:shapes="_x0000_i1235"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image297.png">，则<imgwidth="24"height="22"v:shapes="_x0000_i1236"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image299.png">为（）
①
<imgwidth="24"height="22"v:shapes="_x0000_i1237"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image301.png">
②
<imgwidth="18"height="18"v:shapes="_x0000_i1238"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image285.png">
③
<imgwidth="18"height="18"v:shapes="_x0000_i1239"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image303.png">
④
<imgwidth="54"height="22"v:shapes="_x0000_i1240"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image305.png">
【单选题】
<imgwidth="14"height="16"v:shapes="_x0000_i1205"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image137.png">阶方阵<imgwidth="18"height="18"v:shapes="_x0000_i1206"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image251.png">与<imgwidth="18"height="18"v:shapes="_x0000_i1207"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image253.png">相似的充分必要条件是（）
①
<imgwidth="86"height="22"v:shapes="_x0000_i1208"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image255.png">
②
存在可逆矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1209"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image257.png">与<imgwidth="18"height="24"v:shapes="_x0000_i1210"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image259.png">使得<imgwidth="74"height="24"v:shapes="_x0000_i1211"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image261.png">
③
存在可逆矩阵<imgwidth="16"height="18"v:shapes="_x0000_i1212"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image263.png">使得<imgwidth="82"height="22"v:shapes="_x0000_i1213"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image265.png">
④
存在可逆矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1214"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image257.png">使得<imgwidth="84"height="22"v:shapes="_x0000_i1215"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image268.png">
【单选题】
若存在一可逆阵<imgwidth="18"height="18"v:shapes="_x0000_i1303"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image388.png">使得<imgwidth="54"height="22"v:shapes="_x0000_i1304"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image390.png">为对角阵，其中<imgwidth="134"height="84"v:shapes="_x0000_i1305"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image392.png">，则<imgwidth="18"height="18"v:shapes="_x0000_i1306"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image388.png">为（）
①
<imgwidth="84"height="84"v:shapes="_x0000_i1307"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image394.png">
②
<imgwidth="84"height="84"v:shapes="_x0000_i1308"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image394.png">
③
<imgwidth="84"height="84"v:shapes="_x0000_i1309"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image396.png">
④
<imgwidth="84"height="84"v:shapes="_x0000_i1310"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image398.png">
【单选题】
<imgwidth="44"height="16"v:shapes="_x0000_i1068"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image062.png">矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1069"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">的秩为<imgwidth="18"height="16"v:shapes="_x0000_i1070"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image065.png">，则（）
①
<imgwidth="18"height="18"v:shapes="_x0000_i1071"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">的任意一个<imgwidth="18"height="16"v:shapes="_x0000_i1072"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image065.png">阶子式都不等于零
②
<imgwidth="18"height="18"v:shapes="_x0000_i1073"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">的任意一个<imgwidth="42"height="20"v:shapes="_x0000_i1074"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image068.png">阶子式都不等于零
③
<imgwidth="18"height="18"v:shapes="_x0000_i1075"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">的任意<imgwidth="18"height="16"v:shapes="_x0000_i1076"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image065.png">个列向量必线性无关
④
对于任一<imgwidth="18"height="16"v:shapes="_x0000_i1077"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image065.png">维列向量<imgwidth="14"height="20"v:shapes="_x0000_i1078"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image070.png">，矩阵<imgwidth="56"height="28"v:shapes="_x0000_i1079"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image072.png">的秩都为<imgwidth="18"height="16"v:shapes="_x0000_i1080"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image065.png">
【单选题】
设<imgwidth="48"height="26"v:shapes="_x0000_i1189"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image226.png">是<imgwidth="16"height="18"v:shapes="_x0000_i1190"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image220.png">的特征值且<imgwidth="54"height="22"v:shapes="_x0000_i1191"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image228.png">，则<imgwidth="26"height="28"v:shapes="_x0000_i1192"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image230.png">是（）特征值
①
<imgwidth="28"height="18"v:shapes="_x0000_i1193"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image232.png">
②
<imgwidth="26"height="22"v:shapes="_x0000_i1194"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image234.png">
③
<imgwidth="22"height="22"v:shapes="_x0000_i1195"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image236.png">
④
<imgwidth="28"height="22"v:shapes="_x0000_i1196"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image238.png">
【单选题】
设<imgwidth="162"height="26"v:shapes="_x0000_i1348"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image448.png">是三阶方阵的三个特征值，对应特征向量分别为<imgwidth="62"height="26"v:shapes="_x0000_i1349"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image450.png">，且存在可逆矩阵<imgwidth="17"height="18"v:shapes="_x0000_i1350"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image452.png">，使得<imgwidth="54"height="22"v:shapes="_x0000_i1351"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image390.png"><imgwidth="118"height="84"v:shapes="_x0000_i1352"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image455.png">，则<imgwidth="32"height="18"v:shapes="_x0000_i1353"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image457.png">（）
①
<imgwidth="78"height="28"v:shapes="_x0000_i1354"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image459.png">
②
<imgwidth="78"height="28"v:shapes="_x0000_i1355"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image461.png">
③
<imgwidth="78"height="28"v:shapes="_x0000_i1356"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image463.png">
④
<imgwidth="78"height="28"v:shapes="_x0000_i1357"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image465.png">
【单选题】
若方阵<imgwidth="100"height="58"v:shapes="_x0000_i1264"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image337.png">，则<imgwidth="18"height="18"v:shapes="_x0000_i1265"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image285.png">的特征方程为（
①
<imgwidth="100"height="58"v:shapes="_x0000_i1266"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image339.png">
②
<imgwidth="112"height="24"v:shapes="_x0000_i1267"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image341.png">
③
<imgwidth="100"height="58"v:shapes="_x0000_i1268"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image343.png">
④
<imgwidth="112"height="24"v:shapes="_x0000_i1269"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image345.png">
【单选题】
设<imgwidth="18"height="18"v:shapes="_x0000_i1034"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">为<imgwidth="14"height="16"v:shapes="_x0000_i1035"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image004.png">阶方阵，<imgwidth="18"height="18"v:shapes="_x0000_i1036"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image010.png">是<imgwidth="18"height="18"v:shapes="_x0000_i1037"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">经过若干次矩阵的初等变换后得到的矩阵，则有（）
①
<imgwidth="64"height="22"v:shapes="_x0000_i1038"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image012.png">
②
<imgwidth="66"height="22"v:shapes="_x0000_i1039"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image014.png">
③
若<imgwidth="54"height="22"v:shapes="_x0000_i1040"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image016.png">，则一定有<imgwidth="54"height="22"v:shapes="_x0000_i1041"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image018.png">
④
<imgwidth="54"height="22"v:shapes="_x0000_i1042"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image020.png">，则一定有<imgwidth="54"height="22"v:shapes="_x0000_i1043"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image022.png">
【单选题】
设<imgwidth="14"height="16"v:shapes="_x0000_i1089"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image004.png">元齐次线性方程组<imgwidth="54"height="20"v:shapes="_x0000_i1090"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image030.png">的通解为<imgwidth="108"height="32"v:shapes="_x0000_i1091"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image083.png">则矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1092"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">的秩（）
①
<imgwidth="62"height="24"v:shapes="_x0000_i1093"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image086.png">
②
<imgwidth="90"height="24"v:shapes="_x0000_i1094"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image088.png">
③
<imgwidth="66"height="24"v:shapes="_x0000_i1095"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image079.png">
④
<imgwidth="18"height="18"v:shapes="_x0000_i1096"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">的每行元素之和都不等于零
【单选题】
<imgwidth="14"height="16"v:shapes="_x0000_i1251"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image293.png">阶实对称矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1252"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image285.png">的<imgwidth="14"height="16"v:shapes="_x0000_i1253"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image293.png">个行向量是一组正交单位向量组，则<imgwidth="18"height="18"v:shapes="_x0000_i1254"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image285.png">是（）
①
对称矩阵
②
正交矩阵
③
反对称矩阵
④
<imgwidth="54"height="22"v:shapes="_x0000_i1255"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image329.png">
随机题目
【单选题】
某企业资产总额为600万元，如果发生下列经济业务：（1）收到外单位投资40万元存入银行；（2）以银行存款支付购入材料款12万元；（3）以银行存款偿还银行借款10万元。这时企业资产总额为（ ）。
①
636万元
②
628万元
③
648万元
④
630万元
【单选题】
8-3 图示电路，t=0时开关由1打向2，则uc(0+)= 。<img src=https://huaweicloudobs.ahjxjy.cn/E423FFD24B1E13528DDAA6F4B711A3D2.jpg title=Image00037.jpg alt=Image00037.jpg/>
①
10V
②
2V
③
4V
④
8V
【单选题】
<img title=无标题419.jpg alt=无标题419.jpg src=https://huaweicloudobs.ahjxjy.cn/2788D69147DD77434BC758F4CC3D0CAA.jpg/>
①
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/AD1D7CB5C66800E5E9D703E9B97CDCBD.png data-tex={ Z }_{ 1 }=(15.9-j4.78)\Omega />
②
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/0CDBED7DAB1C6DAB7B52DF2E599B2758.png data-tex={ Z }_{ 1 }=(15.9+j4.78)\Omega />
③
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/467FC96416EC7DCB42A759F57175383F.png data-tex={ Z }_{ 1 }=(4.78+j15.9)\Omega />
④
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/CF99EF8F42F56B72F07A7CB3EA3BAC89.png data-tex={ Z }_{ 1 }=(4.78-j15.9)\Omega />
【单选题】
<img title=无标题111.jpg alt=无标题111.jpg src=https://huaweicloudobs.ahjxjy.cn/FFCD140DADA89A325E403473DAA48141.jpg/>
①
U=<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/6A43875296E96D82DD9C7F8B49F073F6.png data-tex=U=311V\quad ,\quad \varphi ={ 30 }^{ 0 }\quad ,\quad f=50Hz\quad ,\quad T=0.02s/>
②
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/663CC69DAF02F253B0F28D246F4B581A.png data-tex=U=220V\quad ,\quad \varphi ={ 30 }^{ 0 }\quad ,\quad f=50Hz\quad ,\quad T=0.02s/>
③
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/DE2EF4673D0C1D771A6D98DB66C48AE1.png data-tex=U=220V\quad ,\quad \varphi ={ 30 }^{ 0 }\quad ,\quad f=314Hz\quad ,\quad T=0.02s/>
④
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/5682E00D63ADB8357EC4F633D27AEE8C.png data-tex=U=220V\quad ,\quad \varphi ={ 30 }^{ 0 }\quad ,\quad f=50Hz\quad ,\quad T=314s/>
【单选题】
<img title=无标题513.jpg alt=无标题513.jpg src=https://huaweicloudobs.ahjxjy.cn/B14A991417FABF81FD7DC94450397010.jpg/>
①
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/12445F64870BD00D8C74DBBBE1731C4A.png data-tex={ Z }_{ in }=(50+j59.5)\Omega />
②
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/4F9EF917ABC7A09563BDFAE981B053B8.png data-tex={ Z }_{ in }=(40+j59.5)\Omega />
③
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D076A9B76E99B691C9714A6969DA7263.png data-tex={ Z }_{ in }=(50+j40)\Omega />
④
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/DF95332010C4D1231979A33E9DC16704.png data-tex={ Z }_{ in }=(50-j59.5)\Omega />
【单选题】
<img title=无标题47.jpg alt=无标题47.jpg src=https://huaweicloudobs.ahjxjy.cn/E0E40FC3D07C4C80ED64D61DC82A1C13.jpg/>
①
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/7C42ECA2C635AED543397F174865AE9F.png data-tex=(a){ R }_{ eq }=1\Omega ,{ X }_{ eq }=0\Omega ,锛堢數闃伙級\\ (b){ R }_{ eq }=10\Omega ,{ X }_{ eq }=17.32\Omega ,锛堢數闃?鐢垫劅锛塡\ (c){ R }_{ eq }=0\Omega ,{ X }_{ eq }=20\Omega ,锛堢數鎰燂級/>
②
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/DAFCFD487D0691D5A7F4B8056D1D297F.png data-tex=(a){ R }_{ eq }=10\Omega ,{ X }_{ eq }=0\Omega ,锛堢數闃伙級\\ (b){ R }_{ eq }=10\Omega ,{ X }_{ eq }=17.32\Omega ,锛堢數闃?鐢垫劅锛塡\ (c){ R }_{ eq }=0\Omega ,{ X }_{ eq }=20\Omega ,锛堢數鎰燂級/>
③
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/BD537EC07339D30E6EC1AFBB321CDEDD.png data-tex=(a){ R }_{ eq }=1\Omega ,{ X }_{ eq }=0\Omega ,锛堢數闃伙級\\ (b){ R }_{ eq }=10\Omega ,{ X }_{ eq }=17.32\Omega ,锛堢數闃?鐢垫劅锛塡\ (c){ R }_{ eq }=0\Omega ,{ X }_{ eq }=10\Omega ,锛堢數鎰燂級/>
④
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/5CC12E3BFAE388BEB31E384F31AF73C4.png data-tex=(a){ R }_{ eq }=1\Omega ,{ X }_{ eq }=0\Omega ,锛堢數闃伙級\\ (b){ R }_{ eq }=10\Omega ,{ X }_{ eq }=10\Omega ,锛堢數闃?鐢垫劅锛塡\ (c){ R }_{ eq }=0\Omega ,{ X }_{ eq }=20\Omega ,锛堢數鎰燂級/>
【单选题】
<img title=无标题62.jpg alt=无标题62.jpg src=https://huaweicloudobs.ahjxjy.cn/D1D8B7C4E28B32B379A51FC296400082.jpg/>
①
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/88919D4D1D96E2BA00B84A0DB7530A74.png data-tex={ I }_{ A }=22A/>
②
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/52F91CB9E4C157B28780FE1DC00BA21B.png data-tex={ I }_{ A }=38A/>
③
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/5D66ABD668ACB7810FE3DE26D3C97D2A.png data-tex={ I }_{ A }=44A/>
④
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/122DCB9E92DDA4A070638470FB163C61.png data-tex={ I }_{ A }=20A/>
【单选题】
2-2 将题图2-2中所示各电路化为最简形式。<img src=https://huaweicloudobs.ahjxjy.cn/F2D7A856D2C1D71E85DCB2AF9A930028.png title=2-2.PNG alt=2-2.PNG/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/B5166B2901DE35C6C915DD2D1473107B.png title=d.PNG alt=d.PNG/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/9518E8F62D47BB9188AFA5FBAD9CE2E4.png title=c.PNG alt=c.PNG/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/8DD1DC00653DD906ADE3BAC232C8EFE9.png title=b.PNG alt=b.PNG/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/5593908AEAA1A14003570A1C117D8D46.png title=a.PNG alt=a.PNG/>
【单选题】
9-1 函数<img class=jc-formula data-tex=f(t)={ t }^{ 2 } src=https://huaweicloudobs.ahjxjy.cn/93A8E9AE8E71486DF8B4EDB4BA370353.png style=vertical-align: middle;/>的象函数是 。
①
<img class=jc-formula data-tex=\frac { 2 }{ { S }^{ 2 } } src=https://huaweicloudobs.ahjxjy.cn/D778700653DFCA7F57543791D8D5C81D.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=\frac { 2 }{ { S }^{ 3 } } src=https://huaweicloudobs.ahjxjy.cn/30E94B77464712BFD978DDC2F52B6167.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=\frac { 1 }{ { S }^{ 2 } } src=https://huaweicloudobs.ahjxjy.cn/E345C5BBDCC331E1F914E389DE3DF5C1.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=\frac { 1 }{ { S }^{ 3 } } src=https://huaweicloudobs.ahjxjy.cn/0B28FF21C728EBFCF84D3D5EDBEB8E45.png style=vertical-align: middle;/>
【单选题】
8-11 图示电路中US=10V，IS=2A，R=2<img class=jc-formula data-tex=\Omega src=https://huaweicloudobs.ahjxjy.cn/A2D7384252006AD1B2FEDFCDE7FAAB4E.png style=vertical-align: middle;/>，L=4H。则S闭合后电路中的电流iL= 。<img src=https://huaweicloudobs.ahjxjy.cn/904627326BF2BBD3AE0A2DCC931429BE.jpg title=8-11.jpg alt=8-11.jpg width=313 height=156 style=width: 313px; height: 156px;/>
①
<img class=jc-formula data-tex=(3-{ e }^{ -2t })A src=https://huaweicloudobs.ahjxjy.cn/C37220AEBCB64A834DD9E34DBE55AC8D.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=(3-{ e }^{ -\frac { 1 }{ 2 } t })A src=https://huaweicloudobs.ahjxjy.cn/0D6993E67603CFAC0A621B30C5DE3250.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=(3-{ 5e }^{ -2t })A src=https://huaweicloudobs.ahjxjy.cn/BB8D58F300CE55586B31B2CCEBB928EF.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=(3-5{ e }^{ -\frac { 1 }{ 2 } t })A src=https://huaweicloudobs.ahjxjy.cn/5A77FD1B4668F37212DA1DE724F06405.png style=vertical-align: middle;/>