A.higher
B.lower
C.low
D.high
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A.be less than
B.be larger than
C.be as large as
D.not be so large as
A.bosses
B.through bolts
C.machine-turned recesses
D.long studs
A.a mark
B.a bolt
C.a dowel pin
D.a measuring tool
A.gravity disc
B.centrifugal bowl
C.a stack of discs
D.main sealing ring
A.the guideway
B.the piston rod
C.the crosshead shoes
D.the interlocked circlip
A.the scavenging air
B.the exhaust gases
C.the mixed air
D.the spray oil
A.pinion arrangement
B.push rod
C.handle bar
D.cam device
A.crankshaft
B.camshaft
C.piston rod
D.rack and pinion
A.fresh water
B.sea water
C.lubrication
D.fuel oil
A.pushing
B.centrifugal
C.stretch
D.compressive
最新试题
Routine monitoring of a diesel engine should include ().
Combustion knock occurring in a diesel engine can be caused by ().
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as ().
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ().
The highest pressure in a diesel engine cylinder normally occurs ().
To determine if the lube oil filter elements need changing, ().
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because ().
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in ().
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?()
Lube oil cannot be efficiently filtered if its ().