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【单选题】
常用的钢筋混凝土预制桩的接桩方法不包括( )。A.
焊接
B.
法兰
C.
硫磺胶泥锚接
D.
螺纹
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【单选题】There are no doors between two second-class cars; ______________, it might be a little noisier than the other classes.
A.
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B.
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C.
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D.
owing to
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A.
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B.
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C.
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D.
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A.
The front is pink.
B.
The curtain is drawn.
C.
No window can be seen.
D.
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