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名词解释题
大沟(major groove)和小沟(minor groove)
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更多 “名词解释题大沟(major groove)和小沟(minor groove)” 相关考题
考题
Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?A.Control the amount of lube oil burned in the combustion chamberB.Transmit heat from the piston to the cylinder linerC.Prevent damage to ring groove inserts by acting as a heat damD.Dissipate combustion chamber gas pressure by channeling it through the ring gap
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“行李内有哪些主要物品?”的英文为( )A.What are the major problems in your baggage?B.What are the major articles in your baggage?C.What are the minor articles in your baggage?D.What are the articles in your baggage?
考题
During the installation of the groove,the total cross-sectional area of the conductor including insulation in the same groove shall not exceed the inner cross-sectional area of the groove.（ ）。
在线槽安装过程中，同一线槽内包括绝缘在内的导线截面积总和应该不超过线槽内部截面积的（ ）。A.20%
B.40%
C.60%
D.80%
考题
“行李内有哪些主要物品？”的英文为（）A、What are the major problems in your baggage？B、What are the major articles in you rbaggage？C、Whatare the minor articles in your baggage？D、What are the articles in your baggage？
考题
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 rapidlyB
The piston will overheat due to insufficient lubricationC
Excessive oil will remain on the cylinder wallD
Light brown smoke will emanate from the engine exhaust
考题
单选题A diesel engine piston ring face is in direct contact with the （）.A
top of the ring grooveB
cylinder liner oil filmC
bottom of the ring grooveD
back of the ring groove
考题
单选题要创建Groove工作区，可在“开始”选项卡中，单机“新建”下接列表然后选（）A
Groove工作区B
share-Groove工作区C
share-Pointment工作区D
打开文件
考题
单选题Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）A
Control the amount of lube oil burned in the combustion chamberB
Transmit heat from the piston to the cylinder linerC
Prevent damage to ring groove inserts by acting as a heat damD
Dissipate combustion chamber gas pressure by channeling it through the ring gap
考题
单选题Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?（）A
Steel brushB
Fine emery cloth or steel woolC
A section of the removed compression ringD
A case hardened scraper
考题
单选题If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to（）A
excessive ring actionB
excessive ring temperatureC
improper ring rotationD
excessive ring face wear
考题
单选题The sealing function of the piston ring is brought about by the gas pressure above and behind the piston ring, which forces it （） against the bottom of the ring groove, and （） against the cylinder wall.A
upwards；inwardsB
upwards；outwardsC
downwards；inwardsD
downwards；outwards
考题
单选题Ring groove inserts are occasionally used on aluminum alloy piston to（）A
reduce the ring groove wear rateB
seal against crankcase vaporsC
lessen the wear on aluminum part of the cylinderD
allow for the greater expansion rate of aluminum
考题
单选题Broken piston rings manifest themselves during the scavenge port inspection by（）A
Lack of elastic tension, when the rings are pressed into the groove by means of a stickB
Blackish appearanceC
Fractured rings and missing ringsD
all off the above
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