航海英語(yǔ)航海學(xué)基本知識(shí)單項(xiàng)選擇題每日一練(2019.01.20)

來(lái)源：考試資料網(wǎng)

1 A yellow buoy may mark a(n)（）.

2 An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）

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3 （）is the distance east or west measured in degrees，minutes and seconds of arc on the equator between the prime meridian and the meridian passing through the place.

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4 A spherical buoy may be（）.

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5 A vessel is（）when she is not at anchor，made fast to the shore，or aground.

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