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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更多“The piston rings if found worn out （） and supplied by shipchandler.”相关的问题

第1题

[单选题] In the sentence “In some designs the cylinder oil is timed so that the oil injects only on the piston ring belt, the "piston ring belt" means （）.

A、piston crown B、piston ring groove C、piston skirt D、piston ring area

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第2题

[单选题] If the back clearance of a piston ring is excessive,（）

A、compression pressure in the cylinder will be higher B、carbon will accumulate behind the ring C、combustion gases will penetrate beneath the ring land D、piston side thrust will be increased

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第3题

[] If the piston ring gap remains insufficient when installing new rings, youshould（）

A、A.install oversized rings B、B.hone the cylinder liner to allow ring installation C、C.compress the rings tighter with a compressing tool D、D.file the ends of the rings

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第4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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第5题

[单选题] In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）

A、wide compression rings are used B、oil rings are located above the piston C、chromium plating is used on all piston rings D、oil rings are located near the bottom of the piston skirt

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第6题

[单选题] If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?（）

A、The oil control rings will seal improperly and wear rapidly B、The piston will overheat due to insufficient lubrication C、Excessive oil will remain on the cylinder wall D、Light brown smoke will emanate from the engine exhaust

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第7题

[单选题] If due to thick and hard deposits of carbon, the piston rings cannot move freely in their grooves, dark areas will often appear on the upper part of the cylinder wall (may not be the risible at port inspection)What condition of the piston rings can result in this phenomenon?（）

A、micro-seizure B、sticking C、scratched D、breakage/ollapse

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第8题

[] In an internal combustion engine, which of the devices listed will force the compression rings to seal the compression gases in the space above the piston?（）

A、A.Used of bimetallic piston rings B、B.Ring gap pre-tensioning C、C.Thermal increase in ring-end clearance D、D.Gas pressure acting against the back of the ring

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第9题