航海英語海上天氣現(xiàn)象單項選擇題每日一練(2019.01.22)

來源：考試資料網(wǎng)

1 Wen a hurricane passes over colder water or land and loses its tropical characteristics，the storm becomes a（n）（）.

2 Fleet weather forecast messages are the expected conditions in（）.

3 On a working copy of a weather map，a cold front is represented by what color line? （）

4 In bad weather，what length of chain should be used with a single anchor? （）

5 Tropical cyclones are classified by form and intensity.Which system does not have closed isobars（）.