A.displacement in metric tons
B.total weight including cargo
C.volume in cubic feet
D.the volume of the enclosed space
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A.parallel to the longitudinal direction of the chain
B.perpendicular to the direction of the anchor chain
C.diagonally across the link of the anchor chain
D.around the circumference of the chain link
A.oil from flowing out of the tank vent
B.air from entering the tank vent
C.vapors from leaving the tank vent
D.flames on deck from entering the tank vent
A.bulkwark
B.deck line
C.gunwale bar
D.sheer strake
A.bow stem
B.stern
C.portside
D.starboard side
A.after torque causes line pull to exceed the rated capacity of the winch
B.before the line pull reaches the rated capacity of the winch
C.when the line pull reaches the breaking strength of the fall
D.before the safe working load of the fall is reached
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Bilge keels are fitted on ships to（）.
Grinding to eliminate shallow surface defects should be done（）.
The Tonnage Certificate indicates（）.
The riding pawl is（）.
In vessel construction，the garboard strake is（）.
The strake on each side of the keel is called a（）.
A single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe is referred to as a（）.
One function of a bulwark is to（）.
The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.
Holes in the bulwark，which allow deck water to drain into the sea，are（）.