题目内容

A vessel would be referred to as tender when the weight of the cargo is().

A. evenly distributed vertically and the double bottoms are full
B. concentrated low and the double bottoms are empty
C. concentrated low and the double bottoms are full
D. concentrated high and the double bottoms are empty

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A. 正确
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A. 正确
B. 错误

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A. 抽样调查
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C. 统计报表调查

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