航海英語海洋學(xué)基本知識單項(xiàng)選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 The ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth is the（）.

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2 In the Northern Hemisphere the major ocean currents tend to flow（）.

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3 The drift and set of tidal，river，and ocean currents refer to the（）.

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4 A swift current occurring in a narrow passage connecting two large bodies of water which is produced by the continuously changing difference in height of tide at the two ends of the passage is called a(n)（）.

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

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