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单项选择题
A.the camshaft
B.the flange
C.the ridge
D.the bulge
单项选择题
A.charge air receiver
B.scavenging air belt
C.turbine
D.air cooler
单项选择题
A.thrust block
B.sounding rod
C.connecting rod
D.push rod
单项选择题
A.a cooling system
B.a lubrication oil system
C.an electric system
D.an injection system
单项选择题
A.lower than;can lubricate
B.lower than;can cool
C.higher than;can enter
D.higher than ;cannot enter
单项选择题
A.the cylinder cover
B.the piston rings
C.the piston crown
D.the piston skirt
单项选择题
A.whatever
B.whenever
C.wherever
D.whoever
单项选择题
A.scavenging
B.starting
C.cooling
D.blowing
单项选择题
A.make use of
B.have made the use of
C.by means of
D.make advantage of