A.viscosity
B.density
C.velocity
D.electricity
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A.higher
B.lower
C.low
D.high
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
最新試題
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
In a simple mechanical governor, the （）.
A diesel engine piston ring face is in direct contact with the （）.
What is the function of the thrust bearing?（）
The ability of the governor to prevent fluctuations in engine speed is termed （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）