【单选题】【消耗次数：1】
早期的OS主要追求的是？
①
系统的效率
②
用户的方便性
③
可移植
④
可扩充性
参考答案：
复制
纠错
相关题目
随机题目
【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】
下列说法错误的是（）
①
<imgwidth="18"height="18"v:shapes="_x0000_i1311"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">正交则<imgwidth="22"height="22"v:shapes="_x0000_i1312"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image400.png">正交
②
<imgwidth="36"height="22"v:shapes="_x0000_i1313"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image402.png">正交则<imgwidth="30"height="18"v:shapes="_x0000_i1314"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image404.png">也正交
③
<imgwidth="18"height="18"v:shapes="_x0000_i1315"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">正交则<imgwidth="62"height="22"v:shapes="_x0000_i1316"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image406.png">
④
<imgwidth="18"height="18"v:shapes="_x0000_i1317"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">正交则<imgwidth="58"height="28"v:shapes="_x0000_i1318"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image408.png">
【单选题】
<imgwidth="476"height="64"v:shapes="图片_x0020_14"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image014.png">
①
<imgwidth="65"height="34"v:shapes="图片_x0020_15"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image015.png">
②
<imgwidth="67"height="27"v:shapes="图片_x0020_16"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image016.png">
③
<imgwidth="112"height="28"v:shapes="图片_x0020_17"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image017.png">
④
<imgwidth="110"height="33"v:shapes="图片_x0020_18"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image018.png">
【单选题】
<imgwidth="165"height="32"v:shapes="图片_x0020_47"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image045.png">
①
<imgwidth="117"height="32"v:shapes="图片_x0020_48"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image046.png">
②
<imgwidth="110"height="37"v:shapes="图片_x0020_49"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image047.png">
③
<imgwidth="116"height="33"v:shapes="图片_x0020_50"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image048.png">
④
<imgwidth="118"height="37"v:shapes="图片_x0020_51"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image049.png">
【单选题】
已知<imgwidth="66"height="84"v:shapes="_x0000_i1256"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image318.png">和<imgwidth="80"height="84"v:shapes="_x0000_i1257"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image320.png">是线性方程组<imgwidth="54"height="20"v:shapes="_x0000_i1258"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">的两个解，则系数矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1259"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image260.png">是（）
①
<imgwidth="102"height="84"v:shapes="_x0000_i1260"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image323.png">
②
<imgwidth="96"height="58"v:shapes="_x0000_i1261"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image325.png">
③
<imgwidth="96"height="58"v:shapes="_x0000_i1262"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image327.png">
④
<imgwidth="106"height="84"v:shapes="_x0000_i1263"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image329.png">
【单选题】
设<imgwidth="90"height="25"v:shapes="_x0000_i1095"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image084.png">，则<imgwidth="73"height="44"v:shapes="_x0000_i1096"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image112.png">~（）
①
<imgwidth="64"height="25"v:shapes="_x0000_i1097"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image113.png">
②
<imgwidth="48"height="21"v:shapes="_x0000_i1098"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image114.png">
③
<imgwidth="80"height="41"v:shapes="_x0000_i1099"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image116.png">
④
<imgwidth="108"height="25"v:shapes="_x0000_i1100"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image117.png">
【单选题】
<imgwidth="437"height="30"v:shapes="图片_x0020_181"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image180.png">
①
<imgwidth="240"height="41"v:shapes="图片_x0020_182"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image181.png">
②
<imgwidth="240"height="55"v:shapes="图片_x0020_183"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image182.png">
③
<imgwidth="233"height="28"v:shapes="图片_x0020_184"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image183.png">
④
<imgwidth="153"height="46"v:shapes="图片_x0020_185"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image184.png">
【单选题】
齐次线性方程组<imgwidth="190"height="84"v:shapes="_x0000_i1169"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image200.png">的自由未知量为（）
①
<imgwidth="40"height="26"v:shapes="_x0000_i1170"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image202.png">
②
<imgwidth="42"height="26"v:shapes="_x0000_i1171"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image204.png">
③
<imgwidth="42"height="26"v:shapes="_x0000_i1172"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image206.png">
④
<imgwidth="40"height="26"v:shapes="_x0000_i1173"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image208.png">
【单选题】
设函数<imgwidth="36"height="21"v:shapes="_x0000_i1221"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image288.png">在区间<imgwidth="36"height="21"v:shapes="_x0000_i1222"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image340.png">上等于<imgwidth="35"height="19"v:shapes="_x0000_i1223"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image342.png">,而在此区间外等于0;若<imgwidth="36"height="21"v:shapes="_x0000_i1224"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image288.png">可以作为某连续随机变量的概率密度函数,则区间<imgwidth="36"height="21"v:shapes="_x0000_i1225"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image340.png">为（）
①
<imgwidth="40"height="41"v:shapes="_x0000_i1226"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image344.png">
②
<imgwidth="37"height="21"v:shapes="_x0000_i1227"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image346.png">
③
<imgwidth="54"height="42"v:shapes="_x0000_i1228"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image348.png">
④
<imgwidth="48"height="42"v:shapes="_x0000_i1229"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image350.png">
【单选题】
掷一枚骰子，设<imgwidth="247"height="22"v:shapes="_x0000_i1162"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image222.png">，则下列说法正确的是（）
①
<imgwidth="131"height="22"v:shapes="_x0000_i1163"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image224.png">
②
<imgwidth="108"height="25"v:shapes="_x0000_i1164"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image226.png">
③
<imgwidth="90"height="25"v:shapes="_x0000_i1165"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image228.png">
④
<imgwidth="73"height="17"v:shapes="_x0000_i1166"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image230.png">