A.A flashing light combined with a fixed light of greater brightness
B.Light flashes combined in groups，with a different number of flashes in each group
C.A light showing groups of two or more flashes at regular intervals
D.A fixed light varied at regular intervals by groups of two or more flashes of greater brightness
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A.auxiliary guys
B.extra fair leads
C.steel bands
D.stops
A.be open to view so，if a foreign object gets in the gearing，the operator can immediately stop the machinery
B.have a guard over the gearing
C.be painted a contrasting color from the base color in order to call attention to the gearing
D.not be operated if there is any crew within 10 feet of the machinery
A.conspicuously marked
B.stowed anywhere
C.left on deck
D.secured or stowed out of the way
A.coiling
B.faking
C.flemishing
D.lining
A.reduce the water pressure on the hull
B.reduce the water leaking around the plugs
C.prevent progressive flooding
D.reduce the possibility of stress fractures
最新試題
When a line is spirally coiled about its end and lying flat on deck，it is said to be（）.
You are operating a lift boat.When beginning to jack down you should（）.
Solid waste generation，and electricity and water consumption are costly and have their own set of environmental（）.
To warp a vessel means to（）.
What danger is presented if a waterspout passes over a ship?（）
What is TRUE about hoisting operations?（）
The usual method of arranging a line on deck so that it will run out easily without kinking or fouling is（）.
You have been towing astern and have just let go the tow.Your deckhands are pulling in and faking the towline by hand on the stern.The most dangerous action to take is to（）.
The process of lowering a boom to a horizontal position and onto its deck support is called（）.
Which will cause a wire rope to fail（）.