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【单选题】
当大于( ) 时,应设置能独立使用的两座消防水池A.
500m 3
B.
800m 3
C.
1000m 3
D.
2000m 3
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举一反三
【单选题】Let us have a rest, _________? A. will you B. won ’ t you C. shall we D. shan ’ t we A. will you B. shall we C. don ’ t you D. do you
A.
will you
B.
shall we
C.
don ’ t you
D.
do you
【单选题】— Don't close the window, ______? — OK. [ ]
A.
shall we
B.
do you
C.
will you
D.
don't we
【单选题】Let's discuss it after the meeting, ________? [ ]
A.
will you
B.
don't we
C.
won't you
D.
shall we
【单选题】咱们在读图时应该注意到:在三面投影体系中,一条直线只要有一个投影积聚为( ),它必然是一条投影面垂直线,并( )积聚投影所在的投影面。
A.
一直线，垂直于
B.
一点，垂直于
C.
一点，平行于
D.
一直线，平行于
【单选题】—You won't stay up late torught,will you? —_____ [ ]
A.
Yes,we won't.
B.
No, we will.
C.
Yes,we do.
D.
No,we won't.
【单选题】在三面投影体系中,一条直线只要有一个投影积聚为( ),它必然是一条投影面垂直线,并( )积聚投影所在的投影面。
A.
一直线，垂直于
B.
一点，垂直于
C.
一点，平行于
D.
一直线，平行于
【单选题】— Why don't you ask him for help? You be good friends. — We have disagreements and we haven't talked to each other for a long time. [ ]
A.
are used to
B.
are used as
C.
used to
D.
are used for
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