A.keeps sparks from falling into an open tank
B.secures covers on ullage openings
C.prevents sparks from getting out of an enging's exhaust system
D.grounds static electicity
您可能感興趣的試卷
你可能感興趣的試題
A.standing rigging
B.a downhaul
C.a halyard
D.a jib
A.at a high rate of speed
B.under oars
C.against the wind
D.with the wind
A.reverse port engine, apply right rudder
B.reverse port engine,rudder amidships
C.reverse starboard engine, apply right rudder
D.revers starboard engine, rudder amidships
A.in a straight line
B.to port
C.from side to side
D.to starboard
A.aid turing the ship
B.obtain a fine bearing
C.increase ship swing to wind or tide
D.lighten the stress of anchor chains
最新試題
Which of the following is not a form of precipitation?（）
Berthing means bringing a vessel to her berth until（）.
The mean draft of a ship is the draft（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
Bales close to the deckhead should be covered to prevent（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
According to the relevant regulation, lifeboat should be powered by（）.
（）is on the panel of radar.
Fog is likely to occur when there is little difference between the dew point and the（）.