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【单选题】
设集合A={1，2，3}，则集合A的子集的个数是（ ）A.
3个
B.
6个
C.
7个
D.
8个
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反馈参考答案：
举一反三
【单选题】What is the reason that Mr. Baker made a special request?
A.
The rooms have already been booked solid.
B.
Mr. Baker's company has overdue payments.
C.
The number of guests is not enough.
D.
Mr. Baker's company has already received a discount before.
【单选题】月经规则、周期为 28 天的妇女 , 如本月 12 日月经来潮 , 排卵最有可能会在
A.
本月 22 日
B.
本月 26日
C.
次月 2 日
D.
次月 7 日
E.
次月 10 日
【判断题】在坝趾下游设一定长度的混凝土护坦的消能方式,称为底流消能。护坦是消力池的底板,底板上可以设置趾墩、消能墩和尾坎辅助消能,其中趾墩布置在消力池的始端溢流堰的末端。
A.
正确
B.
错误
【单选题】听力原文：M: I hear that Mr. White has left. Has anybody been appointed to take his place? W: I believe several man applied for the job but nothing has been decided yet. Q: What are the speakers talking ab...
A.
Mr. White's reason for leaving.
B.
How to apply {or a job.
C.
Mr. White's new appointment.
D.
A vacant job.
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