航海英語(yǔ)探火與消防設(shè)備單項(xiàng)選擇題每日一練(2019.01.05)

來(lái)源：考試資料網(wǎng)

1 A CO₂ portable extinguisher is annually checked by（）.

2 A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.

3 Any extinguishing agent used on a Class C fire must have which important property?（）

4 A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by，the next step is to（）.

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5 At the required fire drill conducted aboard a ship，all persons must report to their stations and demonstrate their ability to perform the duties assigned to them（）.

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