题目内容

设随机变量X~N(3,22),且P(X>a)=P(X

A. 0
B. 2
C. 3
D. 4

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Tom says his girl classmates ____ talk a lot about love novels at school.

A沟通的互动性
B沟通的双向性
C单向沟通
D沟通的反馈性

A:联邦
B:国联
C:中影

A:1953
B:1948
C:1963

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