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【单选题】
漏泄试验时关闭第一辆车前端折角塞门,列车管系保压1min,列车主管压力下降不大于( )kPa。A.
5
B.
10
C.
20
D.
30
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反馈参考答案：
举一反三
【简答题】The fellow has never met a thief and firmly believes that he lives in a world without thieves. And, the female thief fights against other thieves only to protect this guy's 'daydream'. Sound str...
【单选题】The fellow left without a word as if ________．
A.
never to return
B.
never returning
C.
he had never returned
D.
he would never be returning
【简答题】The fellow has never met a thief and firmly believes that he lives in a world without thieves. And, the female thief fights against other thieves only to protect this guy's 'daydream'. Sound str...
【单选题】The fellow never ______anything for very long.
A.
sticks to
B.
sticks up
C.
goes over
D.
goes to
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