【单选题】【消耗次数：1】
有肺循环经过的器官是
①
心
②
脑
③
肺
④
肾
⑤
胃
参考答案：
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相关题目
【单选题】
右心房、室增大，肺脉动脉段凸出，两肺门大而搏动增强，右下肺动脉干增粗达17mm，两肺纹理增多增粗，边界清晰，肺野透过度正常，其肺循环变化是
①
肺血减少
②
肺充血
③
肺淤血
④
肺出血
⑤
肺栓塞
随机题目
【单选题】
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">
【单选题】
袋中有5个球（3新2旧），每次取1个，无放回的抽取2次，则第2次取到新球的概率为（）
①
<imgwidth="14"height="41"v:shapes="_x0000_i1215"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image315.png">
②
<imgwidth="16"height="41"v:shapes="_x0000_i1216"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image317.png">
③
<imgwidth="16"height="41"v:shapes="_x0000_i1217"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image319.png">
④
<imgwidth="21"height="41"v:shapes="_x0000_i1218"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image321.png">
【单选题】
设<imgwidth="75"height="22"v:shapes="_x0000_i1220"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image314.png">是来自正态总体<imgwidth="60"height="22"v:shapes="_x0000_i1221"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image290.png">的样本，则<imgwidth="98"height="40"v:shapes="_x0000_i1222"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image316.png">服从的分布为（）
①
<imgwidth="37"height="22"v:shapes="_x0000_i1223"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image318.png">
②
<imgwidth="58"height="22"v:shapes="_x0000_i1224"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image320.png">
③
<imgwidth="63"height="40"v:shapes="_x0000_i1225"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image321.png">
④
<imgwidth="63"height="40"v:shapes="_x0000_i1226"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image321.png">
【单选题】
已知<imgwidth="18"height="18"v:shapes="_x0000_i1285"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">是<imgwidth="14"height="16"v:shapes="_x0000_i1286"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image264.png">阶方阵，且<imgwidth="70"height="28"v:shapes="_x0000_i1287"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image305.png">，则<imgwidth="18"height="18"v:shapes="_x0000_i1288"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">的<imgwidth="14"height="16"v:shapes="_x0000_i1289"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image264.png">个行向量中（）
①
任意<imgwidth="14"height="14"v:shapes="_x0000_i1290"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image362.png">个行向量线性无关
②
必有<imgwidth="14"height="14"v:shapes="_x0000_i1291"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image362.png">个行向量线性无关
③
任一行向量都可由其余<imgwidth="36"height="18"v:shapes="_x0000_i1292"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image364.png">个行向量线性表出
④
任意<imgwidth="14"height="14"v:shapes="_x0000_i1293"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image362.png">个行向量都为极大无关组
【单选题】
设<imgwidth="18"height="18"v:shapes="_x0000_i1203"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1204"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">是<imgwidth="14"height="16"v:shapes="_x0000_i1205"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image188.png">阶矩阵，则下列命题成立的是（）
①
<imgwidth="18"height="18"v:shapes="_x0000_i1206"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1207"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">等价则<imgwidth="18"height="18"v:shapes="_x0000_i1208"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1209"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">相似
②
<imgwidth="18"height="18"v:shapes="_x0000_i1210"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1211"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">相似则<imgwidth="18"height="18"v:shapes="_x0000_i1212"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1213"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">等价
③
<imgwidth="18"height="18"v:shapes="_x0000_i1214"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1215"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">等价则<imgwidth="18"height="18"v:shapes="_x0000_i1216"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1217"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">合同
④
<imgwidth="18"height="18"v:shapes="_x0000_i1218"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1219"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">相似则<imgwidth="18"height="18"v:shapes="_x0000_i1220"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image189.png">和<imgwidth="18"height="18"v:shapes="_x0000_i1221"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image190.png">合同
【单选题】
设随机变量<imgwidth="90"height="25"v:shapes="_x0000_i1078"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image084.png">，则<imgwidth="74"height="19"v:shapes="_x0000_i1079"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image086.png">服从（）
①
<imgwidth="64"height="25"v:shapes="_x0000_i1080"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image088.png">
②
<imgwidth="48"height="21"v:shapes="_x0000_i1081"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image090.png">
③
<imgwidth="80"height="41"v:shapes="_x0000_i1082"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image092.png">
④
<imgwidth="108"height="25"v:shapes="_x0000_i1083"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image094.png">
【单选题】
下列结论正确的是（）
①
奇异矩阵经过若干次初等变换可以化为非奇异阵
②
非奇异阵经过若干次初等变换可以化为奇异矩阵
③
非奇异等价于单位阵
④
<imgwidth="214"height="22"v:shapes="图片_x0020_120"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image127.png">
【单选题】
齐次线性方程组<imgwidth="60"height="20"v:shapes="_x0000_i1362"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image448.png">，其中<imgwidth="18"height="18"v:shapes="_x0000_i1363"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">是<imgwidth="38"height="20"v:shapes="_x0000_i1364"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image451.png">的矩阵，<imgwidth="22"height="18"v:shapes="_x0000_i1365"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image453.png">是<imgwidth="36"height="18"v:shapes="_x0000_i1366"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image455.png">的列向量则（）
①
仅有零解
②
必有非零解
③
无解
④
可能有非零解
【单选题】
<imgwidth="223"height="87"v:shapes="图片_x0020_131"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image129.png">
①
<imgwidth="219"height="34"v:shapes="图片_x0020_132"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image130.png">
②
<imgwidth="53"height="31"v:shapes="图片_x0020_133"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image131.png">
③
<imgwidth="90"height="33"v:shapes="图片_x0020_134"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image132.png">
④
<imgwidth="57"height="26"v:shapes="图片_x0020_135"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image133.png">
【单选题】
设随机变量X服从参数<imgwidth="39"height="19"v:shapes="_x0000_i1173"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image246.png">的泊松分布，<imgwidth="36"height="21"v:shapes="_x0000_i1174"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image248.png">为X的分布函数，则下列正确的是（）
①
<imgwidth="67"height="25"v:shapes="_x0000_i1175"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image250.png">
②
<imgwidth="69"height="25"v:shapes="_x0000_i1176"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image252.png">
③
<imgwidth="144"height="27"v:shapes="_x0000_i1177"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image254.png">
④
<imgwidth="107"height="27"v:shapes="_x0000_i1178"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image256.png">