[单选题]船舶航行交接班的问题汇总，应由何人将主要问题记入轮机日志中______。

正确答案 ：C

交班轮机员

[单选题]每具降落设应尽实际可能在_______情况下保持有效

正确答案 ：B

结冰

[单选题]The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the ______of merchant ships.

正确答案 ：C

safety

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