搜题

【单选题】

Worn out ring grooves should be （） to standard dimension after being welded.

A、machined

B、bored

C、honed

D、drilled

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更多“Worn out ring grooves should be （） to standard dimension after being welded.”相关的问题

第1题

[] 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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第2题

[单选题] A diesel engine piston ring face is in direct contact with the （）.

A、top of the ring groove B、cylinder liner oil film C、bottom of the ring groove D、back of the ring groove

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第3题

[] When good and steady service conditions have been achieved, the running surfaces of the piston rings and cylinder liner will be（）In addition, the rings will move freely in the grooves and also be well oiled intact, and not unduly worn.

A、A.hazy light B、B.hazy light brown C、C.hazy light blue D、D.hazy light grey

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第4题

[] In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove

A、A.Ⅰ only B、B.Ⅱ only C、C.both Ⅰ and Ⅱ D、D.neither Ⅰ nor Ⅱ

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第5题

[单选题] The carbon deposits on the piston crown and in the ring grooves （）.

A、should be scraped B、should be derusted C、should be drilled out D、to be brushed off

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第6题

[单选题] The piston rings if found worn out （） and supplied by shipchandler.

A、must replace B、must to be equipped C、has to be repaired D、have to be renewed

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第7题

[单选题] A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（）

A、gap B、side C、back D、radial

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第8题

[单选题] Low compression in a diesel engine could be caused by（）

A、worn or broken cylinder liner sealing rings B、high cooling water temperature C、worn or broken piston rings D、low fuel oil pressure

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第9题

[] If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to（）

A、A.excessive ring action B、B.excessive ring temperature C、C.improper ring rotation D、D.excessive ring face wear

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