A.wooden plug
B.soft rubber plug
C.two-piece soft patch
D.mechanical means of closing
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A.drop strakes
B.stealers
C.throughs
D.voids
A.help keep the deck dry
B.prevent stress concentrations on the stringer plate
C.protect against twisting forces exerted on the frame of the vessel
D.reinforce the side stringers
A.plating
B.beam
C.stiffener
D.stanchion
A.located next to and parallel to the keel
B.located next to and parallel to the gunwale
C.another term for the bilge keel
D.another term for the rub rail
A.increased capacity to set flooding boundaries
B.decreased capacity to set flooding boundaries
C.reduced compartmentation
D.greater deck load capacity
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A wildcat is a（）.
The platform that supports the derrickman when tripping pipe is called the（）.
Freeboard is measured from the upper edge of the（）.
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（）.
Bilge keels are fitted on ships to（）.
Gross tonnage indicates the vessel’s（）.
To determine the weight capacity of a deck in a cargo hold，you would refer to the（）.
Owing to the greater girth of a ship amidships than at the ends，certain strakes are dropped as they approach the bow and stern to reduce the amount of plating at the ends. These strakes are called（）.
One function of a bulwark is to（）.
Regulations require that access to a cargo pumproom in a tanker carrying grade D liquid cargo，shall be（）.