航海英語探火與消防設(shè)備單項(xiàng)選擇題每日一練(2019.01.07)

來源：考試資料網(wǎng)

1 An aircraft has indicated that he wants you to change course and follow him. You cannot comply because of an emergency on board. Which signal should you make?（）

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2 After extinguishing a fire with CO₂，it is advisable to（）.

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3 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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4 A marine chemist issues gas free certificates and is certified by the（）.

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5 A combination or all-purpose nozzle produces（）.

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