Most marine biological sewage treatment plants consist of all the following statements except()
A.aeration tanks
B.settling tanks
C.disinfection agent(消毒剂
D.anaerobic bacteria(厌氧菌)
A.aeration tanks
B.settling tanks
C.disinfection agent(消毒剂
D.anaerobic bacteria(厌氧菌)
第1题
A.flash point
B.fire point
C.upper explosive limit
D.lower explosive hmlt
第2题
第3题
A.Overhaul repair is a major repair.
B.Overhaul repair is carried out in a dock.
C.Overhaul repair is carried out once a year.
D.Overhaul repair is done for the purpose of rating.
第4题
A.equipment failure
B.human error
C.majon casualties
D.unforeseeable circumstances
第5题
A.port state control
B.flag state control
C.fire and boat drill
D.safety inspection
第6题
A.kept as a secret
B.avoided any operation
C.adjusted ballasting
D.noted on board and take naction to arrange alternatives
第7题
A.suitable sequence
B.correct sequence
C.correct priority
D.suitablepriority
第8题
A.All responsible personnel
B.All the crew served in engine room
C.The master
D.The chief engineer
第9题
A.Low level is monitored on the drain tank and header tank.
B.If there is high differential the filters pressure across the circulating
pumps is alarmed
C.The lubricating oil purifier cannot take oil from the drain tank
D.If the sea water pressure falls, this also operates an alarm
第10题
A.higher than the bus equency
B.lower than the bus equency
C.the same as the bus frequency but out of phase with it
D.same as the bus frequency and the circuit breaker may be closed at
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