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【单选题】

A relief valve for a cargo pump is generally installed（）.

A、after the discharge valve

B、between the pump and discharge valve

C、after the suction valve

D、between the pump and suction valve

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更多“A relief valve for a cargo pump is generally installed（）.”相关的问题
第1题
[单选题] Which one of following statement is not true concerning the suitable sites of the direct acting relief valve and the pilot operated relieve valve?（）

A、the direct acting relief valve is used for controlling lower flows and pressure  B、the pilot operated relief valve is used for controlling higher flows and pressure  C、the pilot operated relief valve is used for controlling lower flows and pressure  D、the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve  

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第2题
[单选题] The device used for preventing the passage of flames into enclosed spaces is called a （）.

A、flame relief valve  B、flame stopper  C、safety valve  D、flame arrester  

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第3题
[] If the head pressure is too high,（）

A、A.the relief valve should open before the high-pressure cutout  B、B.the relief valve should open and let excess refrigerant go to receiver  C、C.the high-pressure cutout switch should operate before the relief valve opens  D、D.close in on the suction valve  

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第4题
[] If the head pressure of a reciprocating refrigeration compressor is excessive, （）.

A、A.the relief valve should open before the high pressure cutout  B、B.the relief valve should open and allow the excess refrigerant to flow to the receiver  C、C.the high pressure cutout switch should operate before the relief valve opens  D、D.you should close in on the suction valve  

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第5题
[单选题] According to the regulations，to prevent excessive pressure buildup in cargo tanks containing LFG，they are fitted with（）.

A、pressure vacuum relief valves  B、excess flow valves  C、safety relief valves  D、flame screens  

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第6题
[单选题] The symbol (GB786√1-93) at right side represents （）

A、overflow valve  B、reducing valve  C、relief valve  D、sequence valve  

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第7题
[单选题] The symbol (GB786√1-93) at right side represents （）

A、overflow valve  B、reducing valve  C、relief valve  D、sequence valve  

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第8题
[单选题] All bilge suctions must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor plate level for easy access.

A、strangers  B、relief valves  C、emergency valves  D、strainers  

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第9题
[单选题] If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an （）

A、excessively late injection timing for each cylinder  B、incorrectly adjusted intake valve timing  C、incorrectly adjusted fuel injector  D、incorrectly adjusted intake valve clearance  

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