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【单选题】
( )7、电梯维修人员必须是 的人员。 A、有电工维修经验; B、有司机操作证; C、安全运行管理 D、经过专门培训并取得维修操作证A.
有电工维修经验
B.
有司机操作证
C.
安全运行管理
D.
经过专门培训并取得维修操作证
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反馈参考答案：
举一反三
【单选题】He told us that he would leave for Shanghai ( ).
A.
next day
B.
the next day
C.
the future day
【单选题】He told us ________ story that all of us were pleased to hear it.
A.
so interesting
B.
such interesting
C.
such an interesting
D.
so an interesting
【简答题】精密称定系指称取重量应准确至所取重量的（）；称定系指称取重量应准确至所取重量的（）。
【单选题】He told us that he ________ for two hours.
A.
hasbeen waiting for us
B.
had been waiting for us.
C.
is waiting for us
D.
waiting for us
【单选题】He told us that he was tired and thirsty because he ________ in the desert for days.
A.
walked
B.
has walked
C.
had walked
D.
would walk
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