航海英語求生用語單項選擇題每日一練(2019.01.10)

來源：考試資料網(wǎng)

1 In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system，there must be（）.

2 The FIRST treatment for a surface burn is to（）.

3 The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.

4 The first treatment given to a person overcome by benzene vapor should be to（）.

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