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【简答题】
门式刚架中变截面柱在刚架平面内的整体稳定计算公式中,轴向压力设计值取自柱的___截面,弯矩设计值取自柱的___截面。
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【简答题】河岸溢洪道的类型主要有()、()、()和()四种。
【单选题】The factory produces half a million pairs of shoes every year , 80% are sold abroad.
A.
of which
B.
which of
C.
of them
D.
of that
【简答题】溢洪道的分类(),(),(),()。
【单选题】The factory ________ since February of 1988.
A.
has been open
B.
has opened
C.
was open
D.
opened
【简答题】非常溢洪道的作用的什么，类型有哪些?
【单选题】The factory used 65percent of the raw materials, the rest of which ________(be)saved for other purposes.
A.
am
B.
is
C.
are
D.
was
E.
were
【简答题】The factory workers are ________ to poisonous gases and many of them suffer from lung diseases.(expose)
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