航海英語應(yīng)急預(yù)案與EMS單項(xiàng)選擇題每日一練(2019.01.12)

來源：考試資料網(wǎng)

1 Which extinguishing agent is the best for use on electrical fires?（）

2 When dry chemical extinguishers are used to put out class B fires，there is a danger of reflash because dry chemical（）.

3 Where foam extinguishing systems are provided on a ship，each machinery flat in the protected space must have a(n)（）.

4 Which extinguishing agent is effective in combating an isoprene fire?（）

5 Which space(s) on your cargo vessel must have a fire detection system?（）