A.popular
B.common
C.in lead position
D.uncommon
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A.spur geared
B.screw geared
C.worm geared
D.belt driven
A.cranes
B.windlass
C.capstans
D.mooring winches
A.cranes
B.winch barrel
C.capstans
D.windlass
A.cranes
B.winches
C.capstans
D.windlass
A.a new bacteria colony should be put into the plant in advance
B.the disinfection chemicals should be always used
C.the air blower should be started and keep running in advance
D.the nutrient for bacteria should put into plant in advance
最新試題
Flame failure in an automatically fired auxiliary boiler can from a/an （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Cold weather starting of a diesel engine may be made easier by（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The cetane rating of diesel fuel is an indication of the （）
（） is not installed on the main switchboar.
The shipboard oil pollution emergency plan will be invalid after （）