航海英語燃燒與爆炸單項(xiàng)選擇題每日一練(2019.01.15)

來源：考試資料網(wǎng)

1 A fire pump may be used for other purposes if（）.

2 A carbon dioxide fire extinguisher should be recharged（）.

3 Each fire hose coupling on a ship must have threads that meet the specifications of the（）.

4 Before a tank is to be crude oil washed，the oxygen content in the tank must be measured at a position（）.

5 Control of flooding should be addressed（）.

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