题目内容

If both the ‘high level’and ‘low level’ alarms come on for the same address of a centralized（集中的） control console, the most likely problem is a/an ______.

A. sensor failure
B. failed alarm
C. low level
D. extremely high level

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You are attempting to parallel two AC generators, and the synchroscope(同步器) pointer is revolving in the fast direction. This indicates that the frequency of the incoming machine is ______.

A. higher than the bus frequency
B. lower than the bus frequency
C. the same as the bus frequency but out of phase with it
D. the same as the bus frequency and the circuit breaker may be closed at any pointer position

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中央纪委召开26次会议深入研究，起草改革方案，抓好贯彻落实。成立中央深化国家监察体制改革试点工作领导小组，在_、_、___开展改革试点工作。

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Pressure drop in an operating hydraulic system is developed ______.

A. only by the pump as its primary function
B. by resistance to the fluid flow through the system
C. by the thermal input to the system's fluid
D. solely(单独地) by the charge applied by the accumulators

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Which of the listed problems could produce a high absolute pressure within a flash type evaporator？

A. production of high salinity distillate
B. seawater feed temperature below 165℃
C. a leak in the first stage demister
D. a cracked distillate pump vent line

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If both the ‘high level’and ‘low level’ alarms come on for the same address of a centralized（集中的） control console, the most likely problem is a/an ______.

A. sensor failure B. failed alarm C. low level D. extremely high level

You are attempting to parallel two AC generators, and the synchroscope(同步器) pointer is revolving in the fast direction. This indicates that the frequency of the incoming machine is ______.

中央纪委召开26次会议深入研究，起草改革方案，抓好贯彻落实。成立中央深化国家监察体制改革试点工作领导小组，在___、___、___开展改革试点工作。

Pressure drop in an operating hydraulic system is developed ______.

Which of the listed problems could produce a high absolute pressure within a flash type evaporator？

A. sensor failure
B. failed alarm
C. low level
D. extremely high level

中央纪委召开26次会议深入研究，起草改革方案，抓好贯彻落实。成立中央深化国家监察体制改革试点工作领导小组，在_、_、___开展改革试点工作。