航海英語(yǔ)求生用語(yǔ)單項(xiàng)選擇題每日一練(2019.01.16)

來源：考試資料網(wǎng)

1 Lifeboat hatchets should be（）.

2 Chemical burns are caused by the skin coming in contact with（）.

3 For small，first-degree burns the quickest method to relieve pain is to（）.

4 The depth over a shallow patch，（）about 1．5 miles southeastward of Nanshan Tou lighthouse，reduces to 8 meters.

5 The object of plugging holes below the waterline on a ship should be to（）.