A.eye
B.hole
C.balance holes
D.opening
您可能感興趣的試卷
你可能感興趣的試題
A.Carry out soot blowing if permissible
B.Change fuel supply to diesel oil
C.Close steam stop valves on boiler when pressure is reduced
D.Drain boiler empty when it has cooled down
A.blow
B.clean
C.scavenge
D.purge
A.main stern stop valve
B.auxiliary steam stop valve
C.scum valve
D.blow down valve
A.main stem stop valve
B.auxiliary steam stop valve
C.feed check or control valve
D.blow down valve
A.main stem stop valve
B.auxiliary steam stop valve
C.feed check or control valve
D.blow down valve
最新試題
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Which of the following items don’t belong to dock repair works?（）
Diesel engine air start system check valves are opened by （）
The shipboard oil pollution emergency plan will be invalid after （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
The ISPS Code consists of a mandatory section-Part A, which shows（）