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【判断题】
双线螺纹的导程等于螺距的2倍A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】Whether you liked it or not, you shouldn't have ___ to your mother when she was talking to you. [ ]
A.
turned back
B.
turned down your back
C.
turned your back
D.
turned your back away
【单选题】听力原文：M: Have you heard whether George will have to have that operation or not? W: That's why I called you. When I visited the hospital this noon, I learned they had operated around 9 o'clock. The doct...
A.
He is going to be operated on at 9 o'clock.
B.
He is under operation now.
C.
He already had his operation.
D.
He is all right now.
【单选题】对某高层公共建筑消防给水系统进行维护检测，消防水泵出水干管上的压力开关动作后，消防水泵未启动。下列故障原因分析中，可排除的是( )。
A.
压力开关与水泵之间线路故障
B.
消防水泵控制柜处于手动启泵状态
C.
消防水泵控制柜内继电器损坏
D.
消防联动控制器处于手动启泵状态
【单选题】听力原文：M: Have you heard whether George will have to have that operation or not? W: That's why I called to you. When I visited the hospital this noon, I learned they had operated around 9 o'clock. The d...
A.
He is going to be operated on at 9 o'clock.
B.
He is under operation now.
C.
He already had his operation.
D.
He is all right now.
【简答题】下列函数由哪些函数复合而成.(1) (2) (3) (4) .
【简答题】Whether you have a large network or a small one, you know that the price of the com puter is often only a small part of your total cost of using a computer. Administration and maintenance can drive up...
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