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问题 单项选择题

手摇装置启闭闸门的操作步骤要求：人工手摇操作前，（）先断开电源电源开关，以免突然来电，威胁操作人员的人身安全。

A、可以

B、允许

C、必须

D、视情况

答案

参考答案：C

单项选择题 A1型题

左向右分流型的先心病是（）

A.动脉导管未闭

B.肺动脉狭窄

C.主动脉缩窄

D.右位心

E.大血管错位
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单项选择题

Auditor from Acme Industries: Last week at Acme Bakery, about six percent of the pastries baked during the night shift were found to be imperfect, but no imperfect pastries were found among those baked during the day shift. Pastries are inspected during the same shift in which they are baked, so clearly the night-shift quality control inspectors were more alert, despite their nighttime work hours, than the dayshift quality control inspectors.
The argument depends on the assumption that

A．at least some imperfect pastries were baked during the day shift at Acme Bakery last week.

B．not all of the pastries that the night-shift quality control inspectors judged to be imperfect were in fact imperfect.

C．the night-shift quality control inspectors received more training in quality control procedures than did the day shift quality control inspectors.

D．in a normal week, fewer than six percent of the pastries baked during the night shift at Acme Bakery are found to be imperfect.

E．(E) there are only two shifts per day at Acme Bakery, a day shift and a night shift.
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