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
Diesel engine control can be obtained by the bridge （）.
Proper filtering and straining of fuel oil is important because the （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
Lube oil cannot be efficiently filtered if its （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
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 （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.