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【多选题】
主梁和次梁说法正确的是?A.
主梁是以柱为支座的。
B.
次梁是以柱为支座的。
C.
次梁是以主梁为支座的。
D.
主次是以柱为支座的。
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反馈参考答案：
举一反三
【简答题】系统根轨迹在实轴上如何分布?
【单选题】How long will the man have to wait for a one-bedroom apartment?
A.
6 months.
B.
It is readily available.
C.
3 weeks.
D.
2 days.
【单选题】— How long has the man been waiting? — He _____ for 20 minutes. [ ]
A.
has been waiting
B.
is waiting
C.
was waiting
D.
will wait
【单选题】How long is the man going to stay in the hotel?
A.
Two nights．
B.
One night．
C.
Not mentioned．
【简答题】听下面一段材料,回答第1-3题. 1. How long has the man stayed in the hotel by now? A. As long as fif minutes B. Less than a quarter of an hour. C. Less than ten minutes. 2. Why does the man complain to the rece...
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