航海英語海洋學基本知識單項選擇題每日一練(2019.01.08)

來源：考試資料網(wǎng)

1 The direction of the surface wind is（）.

2 The cold ocean current which meets the warm Gulf Stream between latitudes 40°and 43°N to form the cold wall is called the（）.

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3 The largest waves (heaviest chop) will usually develop where the wind blows（）.

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4 In some river mouths and estuaries the incoming high-tide wave crest overtakes the preceding low-tide trough. This results in a wall of water proceeding upstream，and is called a（）.

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5 In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n)（）.

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