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
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
A green buoy has a yellow triangle on it. This is a(n)（）.
A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）
An inert gas system on a tanker should be used to（）.
A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
An obstruction on a helodeck is any object that might present a hazard to the（）.
Permanent magnetism is caused by（）.
A safe fuel system must（）.