A.cranes
B.winches
C.capstans
D.windlass
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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
A.anaerobic bacteria
B.aerobic bacteria
C.air bubbles
D.disinfection chemicals
A.deoxygenating
B.oxygenating
C.chemicalizing
D.disinfecting
A.deoxygenating
B.extended aeration
C.oxygenating
D.bubbling air
A.waste oil
B.waste cloths
C.Oil rags
D.Waste food
最新試題
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
Diesel engine air start system check valves are opened by （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The main purpose of port State control is not to（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）