A、A.one
B、B.two
C、C.three
D、D.four
更多“A bilge suction line，in a fishing vessel with more than 16 individuals aboard，must have a strainer with an open area not less than how many times the open area of the suction line?（）”相关的问题
A、to inject cleaning additives when the bilges are extremely dirty B、when the main condenser becomes fouled, in order to provide additional cooling water circulation C、to connect the rose box to the independent bilge suction D、if the bilges become flooded and they can not be emptied by any other means
A、suction side of a bilge pump B、exhaust manifold of an auxiliary diesel C、discharge line from an air compressor D、chemical feed tank of an evaporator
A、the circuit breaker B、for leaks in the suction piping C、relief valve is not properly seated D、the suction strainer
A、A.excessive water in the bilges B、B.a clogged suction strainer C、C.oil in the bilges D、D.All of the above
A、distance of the suction liquid level above the line of the pump B、distance the suction liquid level is below the center line of the pump C、force necessary to overcome frictional losses in the pump and piping D、amount in inches of mercury the total suction head is below atmospheric pressure
A、the filter is clogged B、bilge suction value is clogged C、suction value and discharge value of the pump do not open fully D、screw pump is worn seriously and volumetric efficiency is decreased
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