A.vernier
B.psychrometer
C.hygrometer
D.stadimeter
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A.information or regulatory buoy that has lateral significance
B.buoy that is off-station and is marked to warn mariners of its wrong position
C.dual purpose marking used where the ICW and other waterways coincide
D.buoy that was set in error and will be replaced with a red nun buoy
A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center
A.one control
B.two controls
C.three controls
D.none of the above
A.anchored
B.underway but not fishing
C.tending a small fishing boat
D.fishing by trawling
最新試題
It is not necessary to declare（）in MARITIME HEALTH DECLARATION.
It is not necessary to declare（）in the Health List.
A safe fuel system must（）.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A fire pump may be used for other purposes if（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
A fishing vessel displaying the lights shown is（）.