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航海英語安全用語單項選擇題每日一練(2019.01.07)

來源：考試資料網(wǎng)

1 In the International Code of signals，a group of three letters indicates（）.

2 Due to the shape of the sea anchor，the best way to haul it back aboard is by（）.

3 Which method is used to detect rot in manila lines?（）

4 To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.

5 You see an iceberg that has not been reported. What kind of radio message do you transmit to warn others?（）.

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