皮皮学，免费搜题
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【单选题】
下列哪个部位不需要设置机械防烟设施？A.
没有外窗的防烟楼梯间
B.
没有外窗的防烟楼梯间前室
C.
没有外窗的合用前室
D.
非封闭避难层
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】听力原文：M: Can we make you an offer? We would like to run the campaign for four extra weeks. W: Well, can we summarize the problem from our point of view? First of all, the campaign was late. It missed t...
A.
It publishes magazines.
B.
It is engaged in product design.
C.
It sponsors trade fairs.
D.
It runs sales promotion campaigns.
【单选题】Listen and choose the answer which is closest in meaning to each statement you hear.
A.
Even though the bus was early, the class began late.
B.
We took the early bus but still arrived after the class had started.
C.
The bus was not late, so we didn’t missed the first part of the class.
D.
Catching the early bus often makes us late for class.
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