航海英語(yǔ)航海英語(yǔ)綜合練習(xí)單項(xiàng)選擇題每日一練(2019.01.22)

來(lái)源：考試資料網(wǎng)

1 When visibility is 10 nautical miles, we say that visibility is（）.

2 Electronic Chart Display and Information system can assist the mariner in（）.

3 An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.

4 When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision,they shall be deemed to be in（）.

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5 The original equilibrium position is stable when（）.

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