Oil Record Book Part Ⅰ shall be provide to ()A.every oil tankerB.every ship of 150 tons g

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Oil Record Book Part Ⅰ shall be provide to ()

A.every oil tanker

B.every ship of 150 tons gross tonnage and above

C.every ship of 400 tons gross tonnage and above

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗