A.erosion
B.corrosion
C.cavity
D.scouring
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A.0~967
B.0~033
C.0~031
D.0~969
A.the speed of the vessel
B.the speed of the propeller
C.the wake
D.the wake fraction
A.the higher
B.the lower
C.the faster
D.the slower
A.ahead direction
B.astern direction
C.right-handed
D.left-handed
A.the propeller diameter
B.the propeller radius
C.the pitch angle
D.the length of helix
最新試題
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
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 （）
Cold weather starting of a diesel engine may be made easier by（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Which of the following items don’t belong to dock repair works?（）
（） is not installed on the main switchboar.
Under MARPOL Code the ship to which it applies has to carry （）