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【单选题】

A non-return valve in the air delivery line near to the compressor must be （）type similar to the compressor discharge valve.

A、the low inertia

B、the high inertia

C、the low velocity

D、the high velocity

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更多“A non-return valve in the air delivery line near to the compressor must be （）type similar to the compressor discharge valve.”相关的问题
第1题
[单选题] A check valve is another name for （）.

A、a test valve  B、an inspection valve  C、a stop valve  D、a non-return valve  

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第2题
[单选题] A （） in the air delivery line near to each compressor is essential.

A、butterfly valve  B、globe valve  C、gate valve  D、non-return valve  

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第3题
[单选题] The starting air system usually has （） to prevent starting if anything is not in order.

A、stop valves  B、interlocks  C、non-return valves  D、air vents  

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第4题
[单选题] A(n) （） is a special type of valve which prevents the passage of steam but allows condensate to pass.

A、check valve  B、non-return valve  C、steam trap  D、quick closing trap  

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第5题
[单选题] The（） is a smaller valve fitted in the auxiliary steam supply line, and is usually of the non-return type.

A、main stem stop valve  B、auxiliary steam stop valve  C、feed check or control valve  D、blow down valve  

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第6题
[单选题] The（）is fitted in the main steam supply line and is usually of the non-return type.

A、main steam stop valve  B、auxiliary steam stop valve  C、feed check or control valve  D、blow down valve  

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第7题
[单选题] Fuel oil tanks must be fitted with （） that can be closed rapidly and remotely in the event of an emergency such as a fire.

A、stop valves  B、non-return valves  C、quick closing valves  D、relief valves  

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第8题
[单选题] Which of the listed devices would be installed at a control system air pressure reducing station?（）

A、Moisture separator  B、Vacuum breaker  C、Lubricator  D、Non-return valve  

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第9题
[单选题] The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）

A、the upward stroke  B、the downward stroke  C、the power stroke  D、the suction stroke  

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