正确答案: A

change from heavy fuel oil to diesel oil for main engine

题目：When the ships is going to enter into the harbor

解析：A

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举一反三的答案和解析：

[单选题]During bunkering, the request for stoppage of pumping shall be made, as a rule, 5 minutes ______.

ahead

[单选题]鲨鱼袭击落水者，在南半球常发生在：

1月

[单选题]STCW公约的附则和STCW规则，其内容共分______。

八章/八章

[单选题]The cooling liquid used for the cylinder may be referred to as _____.

jacket water

[单选题]燃油锅炉炉膛主要以()方式传热。

辐射

[单选题]船舶检修分工明细表规定，可移动式消防泵检修负责人是____

三管轮