航海英語消防演習(xí)與作業(yè)單項選擇題每日一練(2019.01.16)

來源：考試資料網(wǎng)

1 High-velocity fog（）.

2 A safety outlet is provided on the CO₂ discharge piping to prevent（）.

3 Fixed CO₂ systems would not be used on crew’s quarters or（）.

4 Automatic mechanical ventilation shutdown is required for CO₂ systems protecting the（）.

5 Actuating the CO₂ fixed system causes the shutdown of the（）.