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
Permanent magnetism is found in（）.
An inert gas system installed on a tanker is designed to（）.
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.
For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）
A fire pump may be used for other purposes if（）.
Permanent magnetism is caused by（）.
A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a（）.