A.annular blowout preventer
B.annulus
C.accumulator
D.automatic choke
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A.flame arrestor
B.flame screen
C.detonation arrestor
D.detonation blocker
A.slipway
B.graving dock
C.ground warp
D.caisson dock
A.a 2-second blast every 20 seconds
B.a 4-second blast every 20 seconds
C.an 8-second blast every 30 seconds
D.a 10-second blast every 30 seconds
A.turn off all lights that interfere with the navigation lights
B.turn on all available working lights on deck
C.ring the bell rapidly for five seconds once a minute
D.display two black diamonds in a vertical line during the day
A.Aye Aye Sir
B.Right 15 degrees rudder
C.Rudder is right 15 degrees
D.No reply is necessary，just carry out the order
最新試題
A safe fuel system must（）.
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
Permanent magnetism is found in（）.
A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.
An obstruction on a helodeck is any object that might present a hazard to the（）.
A flooded leg on a liftboat would adversely affect the vessel’s stability underway by（）.
An inert gas system installed on a tanker is designed to（）.
A fishing vessel displaying the lights shown is（）.