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
最新試題
Freeboard is measured from the upper edge of the（）.
Fuel oil tank vents are fitted with a screen which will stop（）.
The antennas of the trucks on deck are not fitted（）.
The joint of the riser in a marine riser system that compensates for heave，the up-and-down motion of a floater，is the（）.
The riding pawl is（）.
The athwartship hull structural members of a ship are（）.
Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this，you should（）.
Grinding to eliminate shallow surface defects should be done（）.
Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.
The strake on each side of the keel is called a（）.