【单选题】【消耗次数：1】
( )是幼儿园教研活动的决策者和引领者。
①
保育员
②
教研组长
③
园长
④
教师
参考答案：
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相关题目
随机题目
【单选题】
设<imgwidth="77"height="21"v:shapes="_x0000_i1232"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image322.png">，<imgwidth="73"height="17"v:shapes="_x0000_i1233"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image324.png">，则<imgwidth="15"height="17"v:shapes="_x0000_i1234"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image280.png">服从于（）分布
①
<imgwidth="48"height="21"v:shapes="_x0000_i1235"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image327.png">
②
<imgwidth="48"height="21"v:shapes="_x0000_i1236"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image327.png">
③
<imgwidth="46"height="21"v:shapes="_x0000_i1237"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image329.png">
④
<imgwidth="48"height="21"v:shapes="_x0000_i1238"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image331.png">
【单选题】
设<imgwidth="73"height="21"v:shapes="_x0000_i1028"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image002.png">，则（）
①
A和B不相容
②
A和B相互独立
③
<imgwidth="61"height="21"v:shapes="_x0000_i1025"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image004.png">或<imgwidth="61"height="21"v:shapes="_x0000_i1026"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image006.png">
④
<imgwidth="111"height="21"v:shapes="_x0000_i1027"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image008.png">
【单选题】
<imgwidth="467"height="83"v:shapes="图片_x0020_126"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image133.png">
①
-1
②
1
③
<imgwidth="26"height="45"v:shapes="图片_x0020_127"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image134.png">
④
<imgwidth="28"height="44"v:shapes="图片_x0020_128"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image135.png">
【单选题】
<imgwidth="495"height="34"v:shapes="图片_x0020_136"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image134.png">
①
<imgwidth="77"height="29"v:shapes="图片_x0020_137"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image135.png">
②
<imgwidth="50"height="25"v:shapes="图片_x0020_138"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image136.png">
③
<imgwidth="98"height="23"v:shapes="图片_x0020_139"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image137.png">
④
<imgwidth="72"height="36"v:shapes="图片_x0020_140"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image138.png">
【单选题】
设<imgwidth="35"height="21"v:shapes="_x0000_i1063"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image070.png">为随机变量，且<imgwidth="223"height="21"v:shapes="_x0000_i1064"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image072.png">则<imgwidth="84"height="21"v:shapes="_x0000_i1065"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image046.png">（）
①
1
②
2
③
3
④
4
【单选题】
设总体<imgwidth="14"height="14"v:shapes="_x0000_i1259"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image333.png">的分布中带有未知参数<imgwidth="12"height="14"v:shapes="_x0000_i1260"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image334.png">，<imgwidth="86"height="22"v:shapes="_x0000_i1261"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image336.png">为样本，<imgwidth="29"height="26"v:shapes="_x0000_i1262"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image338.png"><imgwidth="109"height="26"v:shapes="_x0000_i1263"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image340.png">和<imgwidth="146"height="26"v:shapes="_x0000_i1264"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image342.png">是参数<imgwidth="12"height="20"v:shapes="_x0000_i1265"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image343.png">的两个无偏估计，若对任意的样本容量<imgwidth="12"height="14"v:shapes="_x0000_i1266"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image345.png">，若<imgwidth="12"height="26"v:shapes="_x0000_i1267"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image346.png">为比<imgwidth="12"height="26"v:shapes="_x0000_i1268"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image347.png">有效的估计量，则必有（）
①
<imgwidth="95"height="26"v:shapes="_x0000_i1269"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image348.png">
②
<imgwidth="95"height="26"v:shapes="_x0000_i1270"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image350.png">
③
<imgwidth="86"height="26"v:shapes="_x0000_i1271"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image352.png">
④
<imgwidth="86"height="26"v:shapes="_x0000_i1272"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image354.png">
【单选题】
<imgwidth="19"height="17"v:shapes="_x0000_i1194"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image262.png">为连续型随机变量，<imgwidth="36"height="21"v:shapes="_x0000_i1195"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image288.png">为其概率密度函数，则（）
①
<imgwidth="83"height="21"v:shapes="_x0000_i1196"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image290.png">
②
<imgwidth="56"height="21"v:shapes="_x0000_i1197"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image292.png">
③
<imgwidth="112"height="21"v:shapes="_x0000_i1198"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image294.png">
④
<imgwidth="59"height="21"v:shapes="_x0000_i1199"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image296.png">
【单选题】
设<imgwidth="112"height="21"v:shapes="_x0000_i1027"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image004.png">，即<imgwidth="13"height="15"v:shapes="_x0000_i1028"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image006.png">服从参数为<imgwidth="15"height="19"v:shapes="_x0000_i1029"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image008.png">的泊松分布，则<imgwidth="51"height="44"v:shapes="_x0000_i1030"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image010.png">（）
①
1
②
<imgwidth="15"height="18"v:shapes="_x0000_i1031"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image012.png">
③
2
④
4
【单选题】
若<imgwidth="70"height="26"v:shapes="_x0000_i1276"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image279.png">为齐次线性方程组且<imgwidth="54"height="20"v:shapes="_x0000_i1277"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">的一个基础解系则（）
①
<imgwidth="174"height="26"v:shapes="_x0000_i1278"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image349.png">也是它的一个基础解系
②
基础解系具有唯一性
③
<imgwidth="174"height="26"v:shapes="_x0000_i1279"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image349.png">不一定是<imgwidth="54"height="20"v:shapes="_x0000_i1280"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">的基础解系
④
以上答案都不对
【单选题】
设函数<imgwidth="46"height="26"v:shapes="_x0000_i1097"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image090.png">，方程组<imgwidth="166"height="58"v:shapes="_x0000_i1098"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image092.png">的基础解系中含有1个向量，则必有（）
①
<imgwidth="122"height="58"v:shapes="_x0000_i1099"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image094.png">
②
<imgwidth="98"height="52"v:shapes="_x0000_i1100"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image096.png">
③
<imgwidth="86"height="26"v:shapes="_x0000_i1101"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image098.png">
④
<imgwidth="58"height="26"v:shapes="_x0000_i1102"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image100.png">与<imgwidth="62"height="26"v:shapes="_x0000_i1103"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image102.png">不成比例