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單項(xiàng)選擇題

When a ship is in tropical zone and in seawater of density 1025,she must not load to more than the upper edge of the line marked（）.

A.S
B.T
C.W
D.F

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單項(xiàng)選擇題

A horizontal the 450mm long and 25 mm wide cuts through the loadline disc.It is called the（）.

A.the deck like
B.plimssoll dise
C.plimssoll line
D.summer load line

單項(xiàng)選擇題

Vertically below the deckline is a circle whose outside diameter is 300mm.It is called the（）.

A.the deck line
B.Plimsoll disc
C.Plimsoll line
D.summer load line

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