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【多选题】
下列有关“海绵城市 ” 说法正确的是:A.
海绵城市的提出背景是：城市雨水洪涝，地下水位难以恢复，晴天即旱，雨天即涝。
B.
城市能够像海绵一样，在适应环境变化和应对自然灾害等方面具有良好的“弹性”，下雨时吸水、蓄水、渗水、净水，需要蓄存的水“释放”并加以利用。
C.
海绵城市建设遵照生态优先的原则，不是推到重来。
D.
海绵城市建设就是建设城市地下综合管廊。
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举一反三
【单选题】As NC machines need a large capital investment, we should efficient ly use the m .
A.
T
B.
F
【简答题】个人卫生应做到哪“四勤”?
【单选题】The author thinks that ______.
A.
we should have enough water if every large city purified and reused its water
B.
even if we could purify and reuse the water, water shortage might still be a problem
C.
most large cities in the world have succeeded in purifying and reusing their water
D.
purifying water is the only way to deal with the problem of water shortage
【判断题】The body requires large amount of minerals so we should eat food containing a lot of them .
A.
正确
B.
错误
【简答题】厨房人员的个人卫生应做到哪四勤?
【判断题】As NC machines need a large capital investment, we should efficiently use them.
A.
正确
B.
错误
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