A.gears
B.rams
C.barrels
D.cams
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A.is purified
B.in timed
C.is compressed
D.atomizes
A.crown and skirt
B.liner and jacket
C.ring and groove
D.jacket and block
A.thinner
B.thicker
C.smoother
D.rougher
A.telescopic pipe
B.large bore pipe
C.generating pipe
D.central pipe
A.flat surface
B.mirror finish
C.sloping surface
D.inclined surface
最新試題
The main purpose of port State control is not to（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
Cold weather starting of a diesel engine may be made easier by（）
（） is not installed on the main switchboar.
Which of the following items don’t belong to dock repair works?（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The cetane rating of diesel fuel is an indication of the （）