A.the galvanizing on steel
B.a hatch cover
C.the outer plating of a vessel
D.synonymous with decking
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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
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
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Prior to magnetic particle inspection of anchor chain，the chain should be（）.
Pollution regulations require that each scupper in an enclosed deck area have 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（）.
Holes in the bulwark，which allow deck water to drain into the sea，are（）.
Fuel oil tank vents are fitted with a screen which will stop（）.
Forecastle deck is located in the ship’s（）.
Regulations require that access to a cargo pumproom in a tanker carrying grade D liquid cargo，shall be（）.
The athwartship hull structural members of a ship are（）.
A wildcat is a（）.
On a ship，the deck stringer is the outboardmost deck（）.