单项选择题

The load chart of a crane enables the operator to combine the load radius with boom length to determine the（）.

A.maximum counter weight required
B.minimum horsepower required
C.hoist rope strength
D.allowable load

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A.raised flange at the main deck edge
B.riveted crack arrester strap on all-welded ships
C.riveting pattern most commonly used in ship construction
D.row of plating nearest the keel

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The function of the bilge keel is to（）.

A.reduce the rolling of the vessel
B.serve as the vessel's main strength member
C.add strength to the bilge
D.protect the vessel's hull when alongside a dock

单项选择题

The fore and aft run of deck plating which strengthens the connection between the beams and the frames and keeps the beams square to the shell is called the（）.

A.garboard strake
B.limber strake
C.sheer strake
D.stringer strake