航海英語號燈與號型單項(xiàng)選擇題每日一練(2019.01.13)

來源：考試資料網(wǎng)

1 Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）

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2 A vessel will NOT show sidelights when（）.

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3 A 200-meter vessel is aground in fog. Which signal is optional? （）

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4 All fog signals shall be sounded every two minutes with the exception of a vessel（）.

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5 Lighted information markers show（）.

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