航海英語號(hào)燈與號(hào)型單項(xiàng)選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.

2 By night，you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel，it will be marked by（）.

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3 Environmental loading consists of the forces caused by wind，waves，and（）.

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4 A power-driven vessel，when towing astern，shall show（）.

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5 A power-driven vessel shall have her engine ready for（）when the visibility is restricted.

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