海船船员考试

单选题Which method should be used to warm up the pump turbines prior to discharge（）.A Lock the turbine rotor and slowly bleed in steam until operating temperature is reachedB Run the pump at high speed with the discharge valves closedC Run the turbine at slo

题目
单选题
Which method should be used to warm up the pump turbines prior to discharge（）.
A

Lock the turbine rotor and slowly bleed in steam until operating temperature is reached

B

Run the pump at high speed with the discharge valves closed

C

Run the turbine at slow speed with the pump disconnected

D

Shut the discharge valve and run the pump at slow speed

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正确答案:D

第5题：

Which method should be used to warm up the pump turbines prior to discharge ________．

A.Lock the turbine rotor and slowly bleed in steam until operating temperature is reached

B.Run the pump at high speed with the discharge valves closed

C.Run the turbine at slow speed with the pump disconnected

D.Shut the discharge valve and run the pump at slow speed


正确答案：D

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正确答案:A

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