航海英語(yǔ)海洋學(xué)基本知識(shí)單項(xiàng)選擇題每日一練(2019.01.19)

來(lái)源：考試資料網(wǎng)

1 A snag or other underwater obstruction may form a（）.

2 A condition where two currents meet at the downstream end of a middle bar can be determined by a（）.

3 In the Northern Hemisphere，your vessel is believed to be in the direct path of a hurricane，and plenty of sea room is available. The best course of action is to bring the wind on the（）.

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4 A backlash below a lock is defined as（）.

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5 A current will develop between areas of different density in ocean waters. If you face in the same direction the current is flowing，the water of（）.

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