【单选题】【消耗次数：1】
用户可首先绘制出主要的作图基准线，然后使用OFFSET命令偏移定位线，构成新图形。
①
正确
②
错误
参考答案：
复制
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相关题目
【简答题】
测量工作的基准线是[填空]
随机题目
【单选题】
设<imgwidth="14"height="16"v:shapes="_x0000_i1136"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image002.png">阶可逆矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1137"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image091.png">有一个特征值为2，对应的特征向量为<imgwidth="14"height="16"v:shapes="_x0000_i1138"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image120.png">，则下列等式中不正确的是（）
①
<imgwidth="64"height="20"v:shapes="_x0000_i1139"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image122.png">
②
<imgwidth="80"height="46"v:shapes="_x0000_i1140"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image124.png">
③
<imgwidth="76"height="24"v:shapes="_x0000_i1141"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image126.png">
④
<imgwidth="70"height="24"v:shapes="_x0000_i1142"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image128.png">
【单选题】
已知<imgwidth="92"height="26"v:shapes="_x0000_i1152"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image174.png">线性无关则（）
①
<imgwidth="208"height="26"v:shapes="_x0000_i1153"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image176.png">必线性无关
②
若<imgwidth="14"height="14"v:shapes="_x0000_i1154"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image178.png">为奇数，则必有<imgwidth="266"height="26"v:shapes="_x0000_i1155"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image180.png">线性无关
③
若<imgwidth="14"height="14"v:shapes="_x0000_i1156"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image178.png">为偶数，则<imgwidth="266"height="26"v:shapes="_x0000_i1157"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image180.png">线性无关
④
以上都不对
【单选题】
设离散的随机变量X的分布为<imgwidth="222"height="27"v:shapes="_x0000_i1155"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image211.png">则<imgwidth="27"height="19"v:shapes="_x0000_i1156"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image213.png">（）
①
<imgwidth="32"height="19"v:shapes="_x0000_i1157"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image215.png">
②
任意正实数
③
<imgwidth="35"height="41"v:shapes="_x0000_i1158"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image217.png">
④
<imgwidth="35"height="41"v:shapes="_x0000_i1159"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image219.png">
【单选题】
若方阵<imgwidth="18"height="18"v:shapes="_x0000_i1064"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image004.png">与<imgwidth="18"height="18"v:shapes="_x0000_i1065"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image032.png">等价，则（）
①
<imgwidth="86"height="22"v:shapes="_x0000_i1066"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image034.png">
②
<imgwidth="202"height="24"v:shapes="_x0000_i1067"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image036.png">
③
<imgwidth="118"height="24"v:shapes="_x0000_i1068"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image038.png">
④
存在可逆矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1069"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image040.png">，使<imgwidth="84"height="22"v:shapes="_x0000_i1070"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image042.png">
【单选题】
如果函数<imgwidth="136"height="48"v:shapes="_x0000_i1180"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image260.png">是某连续型随机变量<imgwidth="19"height="17"v:shapes="_x0000_i1181"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image262.png">的概率密度,则区间<imgwidth="37"height="27"v:shapes="_x0000_i1182"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image264.png">可以是（）
①
<imgwidth="33"height="27"v:shapes="_x0000_i1183"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image266.png">
②
<imgwidth="37"height="27"v:shapes="_x0000_i1184"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image268.png">
③
<imgwidth="54"height="32"v:shapes="_x0000_i1185"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image270.png">
④
<imgwidth="33"height="27"v:shapes="_x0000_i1186"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image272.png">
【单选题】
设随机变量<imgwidth="100"height="25"v:shapes="_x0000_i1119"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image157.png">独立同分布，且<imgwidth="223"height="41"v:shapes="_x0000_i1120"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image159.png">，则<imgwidth="115"height="46"v:shapes="_x0000_i1121"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image161.png">（）
①
<imgwidth="37"height="21"v:shapes="_x0000_i1122"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image163.png">
②
<imgwidth="36"height="21"v:shapes="_x0000_i1123"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image165.png">
③
<imgwidth="16"height="41"v:shapes="_x0000_i1124"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image130.png">
④
1
【单选题】
下列二阶方阵中可对角化的是（）
①
<imgwidth="68"height="58"v:shapes="_x0000_i1241"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image307.png">
②
<imgwidth="66"height="58"v:shapes="_x0000_i1242"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image309.png">
③
<imgwidth="58"height="58"v:shapes="_x0000_i1243"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image311.png">
④
<imgwidth="68"height="58"v:shapes="_x0000_i1244"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image313.png">
【单选题】
设总体<imgwidth="14"height="14"v:shapes="_x0000_i1069"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image002.png">服从两点分布：<imgwidth="259"height="20"v:shapes="_x0000_i1070"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image080.png"><imgwidth="75"height="26"v:shapes="_x0000_i1071"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image081.png">为其样本，则样本均值<imgwidth="12"height="18"v:shapes="_x0000_i1072"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image083.png">的期望<imgwidth="49"height="20"v:shapes="_x0000_i1073"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image085.png">（）
①
<imgwidth="12"height="18"v:shapes="_x0000_i1074"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image087.png">
②
<imgwidth="18"height="22"v:shapes="_x0000_i1075"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image089.png">
③
<imgwidth="32"height="22"v:shapes="_x0000_i1076"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image091.png">
④
<imgwidth="20"height="22"v:shapes="_x0000_i1077"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image093.png">
【单选题】
随机变量X在下面区间上取值，使函数<imgwidth="80"height="21"v:shapes="_x0000_i1167"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image234.png">成为它的概率密度的是（）
①
<imgwidth="46"height="46"v:shapes="_x0000_i1168"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image236.png">
②
<imgwidth="49"height="46"v:shapes="_x0000_i1169"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image238.png">
③
<imgwidth="39"height="27"v:shapes="_x0000_i1170"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image240.png">
④
<imgwidth="70"height="46"v:shapes="_x0000_i1171"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image242.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">