His application for a US visa was ______ because of the inclination of immigration.
A. injected
B. objected
C. rejected
D. subjected
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I'm afraid you still can't understand the manufacturing process and you'd better go to the lab to ______ it ______.
A. check ... with
B. check ... on
C. check ... for
D. check ... out
抛掷一枚硬币,观察其出现的是正面还是反面,并将事件A定义为:事件=出现正面,这一事件的概率记作P(A)。则概率P(A)=1/2的含义是()
A. 抛掷多次硬币,恰好有一半结果正面朝上
B. 抛掷两次硬币,恰好有一次结果正面朝上
C. 抛掷多次硬币,出现正面的次数接近一半
D. 抛掷一次硬币,出现的恰好是正面
一部电梯在一周内发生故障的次数X及相应的概率如下表所示:
A. 0.35
B. 0.10
C. 0.25
D. 0.30
一部电梯在一周内发生故障的次数X及相应的概率如下表所示:故障次数多余1次的概率为()
A. 0.25
B. 0.35
C. 0.60
D. 0.65