航海英語(yǔ)海洋學(xué)基本知識(shí)單項(xiàng)選擇題每日一練(2019.01.23)

來(lái)源：考試資料網(wǎng)

1 The currents are（）mosoonal origin．

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

3 Radiation fog（）.

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

5 A rotary current sets through all directions of the compass. The time it takes to complete one of these cycles is approximately（）.