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单选题
The air distributor is conventionally driven by（） and distributes into each cylinder by（） certain sequence.
A
camshaft；fresh air
B
camshaft；starting air
C
electronic motor which is controlled by a computer；fresh air
D
electronic motor which is controlled by a computer；starting air
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_______is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A.An air receiverB.An operating valveC.An automatic valveD.An air distributor
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If you are unable to stop a diesel engine by any other means，you should ______．A.Discharge a CO2 extinguisher in the air inletB.Pull off the distributor capC.Secure the jacket waterD.Secure the starting air supply valve
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I often do absent-minded things,particularly when I'm worried.A: inevitably
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单选题The lowest ring of a piston is （）.A
a coil springB
a sealing ringC
an oil distributor ringD
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leaking discharge valveB
jammed suction valveC
tripped overload relayD
broken discharge un-loader
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a sailing vesselC
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单选题Modem engines make use of exhaust gas driven turbo-chargers to supply pressurized fresh air for （） and supercharging.A
scavengingB
startingC
coolingD
blowing
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单选题If you are unable to stop a diesel engine by any other means，you should（）.A
discharge a CO2 extinguisher in the air inletB
pull off the distributor capC
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secure the starting air supply valve
考题
单选题In the starting system, the automatic valve is controlled by（）, and the cylinder start valves are controlled by（）A
pilot air；pilot airB
handle；solenoidC
handle；pilot air coming through the distributorD
solenoid；pilot air coming through the distributor
考题
单选题（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A
An air receiverB
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motor-driven vacuum pumpC
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单选题About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）A
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考题
单选题The air distributor is conventionally driven by（） and distributes into each cylinder by（） certain sequence.A
camshaft；fresh airB
camshaft；starting airC
electronic motor which is controlled by a computer；fresh airD
electronic motor which is controlled by a computer；starting air
考题
单选题“This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density（）, drives the compressor directly（）A
a modern diesel engine；a turbine wheelB
a modem diesel engine；exhaust gasesC
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考题
单选题A six-cylinder, two-stroke/cycle diesel engine is fitted with a rotary distributing air starting systemThe speed of the rotating distributor disc is （）A
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单选题Modem engines （） exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.A
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have made the use ofC
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make advantage of
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单选题The exhaust ports are located around the lower part of the cylinder liner, （）the products of combustion are driven by scavenging air.A
in whichB
by whichC
through whichD
from which
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