单项选择题

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（）.

A.by the toolpusher
B.in the station bill
C.by the person conducting the drill
D.at the previous safety meeting

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单项选择题

At night while the ship is tied up to the dock，a fire breaks out in a cargo hatch. After sounding the alarm，what should the person on watch do?（）

A.Begin fighting the fire immediately
B.Await further orders from the Master
C.Let go the lines to let the vessel drift to an anchorage
D.Send a person to summon the shore authorities

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As compared to carbon dioxide，dry chemical has which advantage?（）.

A.Cleaner
B.Effective on metal fires
C.Greater range
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As an extinguishing agent，foam（）.

A.conducts electricity
B.should be directed at the base of the fire
C.is most effective on burning gases which are flowing
D.extinguishes by cooling oil fires below ignition temperature