A.aluminum-plated
B.bronze-plated
C.zinc-plated
D.chromium-plated
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A.must be provided
B.may be provided
C.have provided
D.can be provided
A.has to be cooled
B.has heated
C.has preheated
D.has to be preheated
A.inefficiency
B.oiliness
C.detergency
D.purity
A.reciprocating pump
B.gear pump
C.centrifugal pump
D.vane pump
A.the cylinder
B.the crankshaft
C.the piston
D.the cross-head
最新試題
Lube oil cannot be efficiently filtered if its （）.
Diesel engine control can be obtained by the bridge （）.
Proper filtering and straining of fuel oil is important because the （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
To determine if the lube oil filter elements need changing, （）.
In using reduction gears to obtain efficient propeller speeds, （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.