单项选择题
The indications of a scavenge fire are excessive black smoke, （） and peeling from scavenge trunking.
A.turbo-chargers surge
B.spark seen from the drains
C.paint blistering
D.all above are right
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The indicated power of an engine can be obtained by taking the （）.
A.precautions
B.rpm
C.indicator cards
D.B and C -
单项选择题
The ignition of the fuel in diesel engine is caused by the （） of compression of the air previously admitted into the cylinders.
A.vacuum pressure
B.specific gravity
C.heat
D.viscosity -
单项选择题
The hydraulic （） is used to control engine speed.
A.motor
B.pump
C.governor
D.capstan
