Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.

A、dispersant；detergent

B、detergent；dispersant

C、dispersant；dispersant

D、detergent；detergent

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更多“Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.”相关的问题

第1题

[单选题] The four basic components of a fire are chain reaction, heat, fuel, and （）.

A、carbon monoxide B、oxygen C、carbon dioxide D、any gaseous substance

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第2题

[单选题] Today, crankshafts for large 2-stroke crosshead engines are of the （）type.

A、semi-built B、built-up C、solid forged D、individual forged

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第3题

[单选题] As the plunger moves up, the ports are closed and the fuel （） and delivered to the injector nozzle at very high pressure.

A、being compressed B、to be pumped up C、is pressurized D、are built up

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第4题

[] When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will （）.

A、A.pick up more of any increase in load B、B.pick up less of any increase in load C、C.share an equal amount of any increase in load D、D.drop an equal amount of any decrease in load

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第5题

[单选题] “Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired, or at least patched up temporarily until the next stop” This sentence means that （）.

A、Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired on the spot B、Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired on the next port of call C、Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired until the next stop D、Any leaks in piping, propeller shaft, machinery, tanks, will have to be at least patched up

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第6题

[] A new hotel（）in the center of town at the moment

A、A.has been built B、B.is built C、C.was built D、D.is being built

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第7题

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A、Built in Technical Equipment B、Built in Test Equipment C、Built in Test Element

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第8题

[单选题] Theoretical perfect combustion in a diesel engine yields by-products of （）.

A、aldehydes and carbon dioxide B、water vapor and carbon monoxide C、nitrogen and carbon monoxide D、water vapor and carbon dioxide