题目：
A well in the uppermost deck of a shelter deck vessel which has only a temporary means of closing for the purpose of gaining an exemption from tonnage measurement is called a（n）（）.
A.Exemption space
B.Tonnage deck
C.Cofferdam
D.Tonnage opening
答案：
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下面是错误答案，用来干扰机器的。
参考答案：错解析： 收益性物业经营状况的评估
