A.reciprocating pump
B.vane pump
C.screw pump
D.centrifugal pump
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A.reciprocating pump
B.vane pump
C.mono pump
D.axial-flow pump
A.The rams work inside cylinders
B.The cylinders have glands sealing their open ends
C.The rams are connected to a cross-head
D.The cross-head is mounted on the rudder stock
A.an exciter driven by the same shaft with the generator
B.an exciter driven by external prime mover
C.generator itself
D.either A and B
A.oily water separator
B.sewage treatment plant
C.fuel oil separator
D.incinerator
A.residual magnetism
B.voltage regulator
C.electrical current for excitation
D.the other running generator
最新試題
The main purpose of port State control is not to（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The shipboard oil pollution emergency plan will be invalid after （）
Diesel engine air start system check valves are opened by （）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
（） is not installed on the main switchboar.
Cold weather starting of a diesel engine may be made easier by（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）