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
最新試題
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
Diesel engine control can be obtained by the bridge （）.
Proper filtering and straining of fuel oil is important because the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
In a simple mechanical governor, the （）.
Routine monitoring of a diesel engine should include （）.
Maximum horsepower of a diesel engine is attained （）.