單項(xiàng)選擇題A continual worsening of the list or trim indicates().

A.negative GM
B.propressive flooding
C.structural failure
D.an immediate need to ballast


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1.單項(xiàng)選擇題A continuous watertight bulkhead is normally also a (n)().

A.structural bulkhead
B.exterior bulkhead
C.certerline bulkhead
D.joiner bulkhead

2.單項(xiàng)選擇題A crack in the deck plating of a vessel may be temporarily prevented from increasing in length by().

A.cutting a square notch at each end of the crack
B.drilling a hole at each end of crack
C.slot-welding the crack
D.welding a doubler over the crack

4.單項(xiàng)選擇題A deadhead is a (n)().

A.tree or long awash in a nearly vertical position
B.crew member who refuses to work
C.upstream end of a load wall
D.buoy that is adrift

5.單項(xiàng)選擇題A disk with a horizontal line through its center, equivalent to the summer load line, is called the().

A.deadrise mark
B.maximum alloable draft mark
C.pilmsoll mark
D.tonnage mark