A.away from galleys，living quarters，or navigation spaces
B.only from areas equipped with power ventilation systems
C.from the open deck
D.isolated from sources of vapor ignition
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A.degaussed
B.demagnetized
C.soaked
D.sandblasted
A.wooden plug
B.soft rubber plug
C.two-piece soft patch
D.mechanical means of closing
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
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The athwartship hull structural members of a ship are（）.
The machinery associated with heaving in and running out anchor chain is the（）.
The purpose of cant frames in steel vessels is（）.
The Tonnage Certificate indicates（）.
A wildcat is a（）.
Ship’s steering gear refers to（）.
On a ship，the deck stringer is the outboardmost deck（）.
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（）.
In vessel construction，the garboard strake is（）.
Freeboard is measured from the upper edge of the（）.