航海英語遇險(xiǎn)用語單項(xiàng)選擇題每日一練(2019.01.12)

來源：考試資料網(wǎng)

1 An orange flag showing a black circle and square is a（）.

2 Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.

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3 A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY DIRECTED TO A RCC GIVING POSITION，IDENTIFICATION，COURSE AND SPEED OF THE VESSEL AS WELL AS THE NATURE OF DISTRESS is known as（）.

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4 A continuous sounding of a fog-signal apparatus indicates（）.

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5 When two vessels are in immediate danger of collision，the stand-on vessel must（）.

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