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【单选题】
轨枕的作用是支承（ ），并将钢轨传来的压力均匀地传递给道床，保持钢轨应有的位置和轨距。A.
道床
B.
路基
C.
钢轨
D.
机车
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举一反三
【单选题】---It’s 12 April today. Have they found any useful information about the plane's black box? ---Flight MH370? Yes, but it’s difficult to decide where the black box really is.
A.
still
B.
ever
C.
yet
D.
never
【简答题】How many animals can the man see?
【简答题】Many animals can (judge) directions by smelling.
【简答题】某房屋基础平面图、断面图如下图所示,求 该 房屋人工土方的工程量。 (土壤类别为一、二类土; C10素砼垫层;C20钢筋砼基础 )
【简答题】Many animals can (judge) direction by smelling.
【单选题】Many animals can make circus act together not because ______.
A.
they become interested in the act
B.
they can receive praise and food after the act
C.
they become accustomed to each other
D.
they are not the natural enemies
【简答题】Many animals can maintain constant conditions in their interval
environment.A. relate B. relative C. relativity D. relatively
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