单选题A disk with a horizontal line through its center，equivalent to the summer load line，is called the（）.Adeadrise markBmaximum allowable draft markCplimsoll markDtonnage mark
单选题
A disk with a horizontal line through its center，equivalent to the summer load line，is called the（）.
A
deadrise mark
B
maximum allowable draft mark
C
plimsoll mark
D
tonnage mark
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