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（）.
For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
It is not necessary to declare（）in MARITIME HEALTH DECLARATION.
A safe fuel system must（）.
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（）.
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?（）
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.
A head-on situation at night is one in which you see dead ahead a vessel showing（）.