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
Cargo transfer operations on a tank vessel need NOT be stopped when（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A fishing vessel displaying the lights shown is（）.
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.
After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.
A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the（）.
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 fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
Permanent magnetism is found in（）.
A flooded leg on a liftboat would adversely affect the vessel’s stability underway by（）.