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问题
填空题
沿门开启方向,同时拉二扇厅门,在任何点门扇距离都应≤()mm,且被动门锁不能断开。
答案
参考答案:30
选择题
— Can you tell me what time the flight to Detroit leaves?
— I'm sorry, but it ____ due to the fog.
A. has been canceled
B. had been canceled
C. has canceled
D. had canceled
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判断题
78型磁定位的引出线有2根。
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