【单选题】【消耗次数：1】
以下哪项不是深静脉血栓的临床表现
①
下肢肿胀
②
歇性跛行
③
疼痛
④
浅静脉曲张
参考答案：
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相关题目
随机题目
【单选题】
<imgwidth="557"height="118"v:shapes="图片_x0020_13"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image013.png">
①
<imgwidth="31"height="23"v:shapes="图片_x0020_14"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image014.png">
②
<imgwidth="67"height="34"v:shapes="图片_x0020_15"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image015.png">
③
<imgwidth="18"height="25"v:shapes="图片_x0020_16"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image016.png">
④
<imgwidth="33"height="26"v:shapes="图片_x0020_17"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image017.png">
【单选题】
设总体<imgwidth="63"height="20"v:shapes="_x0000_i1122"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image170.png">，则<imgwidth="12"height="14"v:shapes="_x0000_i1123"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image172.png">的矩估计和极大似然估计分别为（）
①
矩估计<imgwidth="40"height="22"v:shapes="_x0000_i1124"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image174.png">极大似然估计<imgwidth="35"height="22"v:shapes="_x0000_i1125"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image176.png">
②
矩估计<imgwidth="46"height="37"v:shapes="_x0000_i1126"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image178.png">极大似然估计<imgwidth="35"height="22"v:shapes="_x0000_i1127"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image176.png">
③
矩估计<imgwidth="46"height="37"v:shapes="_x0000_i1128"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image178.png">极大似然估计<imgwidth="37"height="37"v:shapes="_x0000_i1129"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image180.png">
④
矩估计<imgwidth="40"height="22"v:shapes="_x0000_i1130"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image174.png">极大似然估计<imgwidth="37"height="37"v:shapes="_x0000_i1131"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image180.png">
【单选题】
设随机事件A与B相互独立，<imgwidth="118"height="21"v:shapes="_x0000_i1058"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image068.png">，则<imgwidth="77"height="21"v:shapes="_x0000_i1059"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image070.png">（）
①
0.6
②
0.75
③
0.25
④
1
【单选题】
设<imgwidth="32"height="21"v:shapes="_x0000_i1056"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image046.png">为两个随机事件，且<imgwidth="73"height="21"v:shapes="_x0000_i1057"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image048.png">，则<imgwidth="80"height="21"v:shapes="_x0000_i1058"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image050.png">（）
①
<imgwidth="37"height="21"v:shapes="_x0000_i1059"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image052.png">
②
<imgwidth="48"height="21"v:shapes="_x0000_i1060"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image054.png">
③
<imgwidth="66"height="21"v:shapes="_x0000_i1061"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image056.png">
④
1
【单选题】
随机变量X服从正态分布<imgwidth="64"height="25"v:shapes="_x0000_i1160"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image113.png">，则随着<imgwidth="16"height="15"v:shapes="_x0000_i1161"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image222.png">的增大，概率<imgwidth="103"height="27"v:shapes="_x0000_i1162"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image224.png">（）
①
单调增大
②
单调减小
③
保持不变
④
增减不定
【单选题】
<imgwidth="356"height="29"v:shapes="图片_x0020_89"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image096.png">
①
<imgwidth="37"height="32"v:shapes="图片_x0020_90"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image097.png">
②
<imgwidth="33"height="32"v:shapes="图片_x0020_91"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image098.png">
③
<imgwidth="36"height="30"v:shapes="图片_x0020_92"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image099.png">
④
<imgwidth="28"height="29"v:shapes="图片_x0020_93"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image100.png">
【单选题】
若二次型<imgwidth="394"height="28"v:shapes="_x0000_i1252"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image259.png">为正定二次型，则<imgwidth="16"height="20"v:shapes="_x0000_i1253"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image261.png">的取值范围为（）
①
<imgwidth="80"height="48"v:shapes="_x0000_i1254"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image263.png">
②
<imgwidth="66"height="48"v:shapes="_x0000_i1255"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image265.png">
③
<imgwidth="54"height="48"v:shapes="_x0000_i1256"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image267.png">
④
<imgwidth="94"height="48"v:shapes="_x0000_i1257"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image269.png">
【单选题】
设<imgwidth="14"height="22"v:shapes="_x0000_i1181"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image253.png">是<imgwidth="12"height="14"v:shapes="_x0000_i1182"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image255.png">次重复试验中事件<imgwidth="12"height="20"v:shapes="_x0000_i1183"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image257.png">出现的次数，<imgwidth="12"height="18"v:shapes="_x0000_i1184"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image259.png">是事件<imgwidth="12"height="20"v:shapes="_x0000_i1185"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image257.png">在每次试验中出现的概率，则对任意<imgwidth="35"height="22"v:shapes="_x0000_i1186"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image261.png">均有<imgwidth="127"height="42"v:shapes="_x0000_i1187"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image263.png">（）
①
=0
②
=1
③
0
④
不存在
【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】
二次型<imgwidth="210"height="28"v:shapes="_x0000_i1315"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image375.png">的规范形是（）
①
<imgwidth="68"height="28"v:shapes="_x0000_i1316"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image377.png">
②
<imgwidth="22"height="28"v:shapes="_x0000_i1317"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image379.png">
③
<imgwidth="58"height="28"v:shapes="_x0000_i1318"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image381.png">
④
<imgwidth="58"height="28"v:shapes="_x0000_i1319"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image383.png">