问题
单项选择题
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
答案
参考答案：B
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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
参考答案：B