航海英語海洋學(xué)基本知識(shí)單項(xiàng)選擇題每日一練(2019.01.14)

來源：考試資料網(wǎng)

1 A stretch where the channel changes from one side of the river to the other is called a（）.

2 Low pressure disturbances，which travel along the intertropical convergence zone，are called（）.

3 A tide is called diurnal when（）.

4 A light，feathery deposit of ice caused by the sublimation of water vapor directly into the crystalline form，on objects whose temperatures are below freezing，is called（）.

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5 A section of the river that is narrower than usual and is often navigable from bank to bank is a（）.

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