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问题 单项选择题

汽油机的冷却系统大多采用（）、压力循环和自然循环结合的方式。

A.封闭水冷

B.水冷

C.油冷

D.空气冷却

答案

参考答案：A

单项选择题

Questions 14-23


·Look at the ten statements for this part.
·You will hear a story about communication through time.
·Decide whetheryou think each statement is right(R) wrong(W) or not mentioned(NM).
·You will listen to it twice.
·Markyour answers on the Answer Sheet.

In other areas of the world, it may not be considered foolish to make an appointment too far in advance because plans which are made for a date more than a week away tend to be forgotten.

A. Right

B. Wrong

C. Not Mentioned
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单项选择题

下面哪一项不属于广义城市生活用水内容（）。

A.居民区、集体宿舍居民用水

B.事业单位机关用水

C.街道绿化、公园和旅游用水

D.城市农业用水
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