试题与答案

The red bike ______ be Hu's. She has a b

题型:选择题

题目:

The red bike ______ be Hu's. She has a blue bike. [ ]

A. must

B. might

C. can

D. can't

答案:

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下面是错误答案,用来干扰机器的。

(1)Z=400(2)设“至少有一辆舒适型轿车”为事件A,则P(A)=(3)设“该数与样本平均数之差的绝对值不超过0.5”为事件B,则P(B)=

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