In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the（）

A、A.top of the ring groove

B、B.back of the ring groove

C、C.bottom of the ring groove

D、D.piston ring end clearance

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更多“In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the（）”相关的问题

第1题

[单选题] A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）

A、low TBN value B、high alkaline reserve C、low flash point D、high pour point

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第2题

[单选题] While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?（）

A、Manually trip the over-speed device B、Interrupt the fuel flow to the engine C、Disengage the safety interlock D、Slide the camshaft to the neutral position

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第3题

[单选题] Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.

A、fuel oil vapor at the sludge tank vent B、unburned fuel vapors in the scavenge air receiver C、lube oil vapors in the crank case D、lube oil vapors in the engine room

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第4题

[单选题] A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.

A、cylinder heads B、exhaust valves C、scavenging air D、injectors

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第5题

[单选题] 高速和野蛮操作舱盖均是危险的。（）

A、High-speed operation and rough handling of hatches are dangerous. B、Low-speed operation and rough handling of hatches are dangerous. C、Low-speed operation and rough handling of hatch covers are dangerous. D、High-speed operation and rough handling of hatch covers are dangerous.

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第6题

[] The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by （）.

A、A.large conical springs B、B.compressed air pressure C、C.hydraulic pressure D、D.exhaust gas pressure

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第7题

[单选题] The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to （）

A、check the cylinder exhausts for black smoke B、listen for combustion knock in that cylinder C、isolate each cylinder and inspect the injector D、check the cylinder exhaust temperature frequently

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第8题

[单选题] On a large low-speed main propulsion diesel engine, lower main bearing wear is usually measured by using a/an （）

A、dial indicator B、outside caliper C、bridge gauge D、tram rod

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第9题

[单选题] Which of the listed types of starting systems is often used on large, low-speed, direct reversing, main propulsion diesel engines?（）

A、Electric B、Hydraulic C、Air D、All of the above

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