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單項(xiàng)選擇題

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

A.Cooling ability
B.Leaves no residue
C.Penetrating power
D.Nonconductivity

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單項(xiàng)選擇題

Antares is found in what constellation?（）

A.Scorpio
B.Corvus
C.Libra
D.Corona Borealis

單項(xiàng)選擇題

An undocumented vessel with 10 people aboard and operating 25 miles off the seacoast must carry a survival craft of the（）.

A.inflatable buoyant apparatus type
B.buoyant apparatus type
C.life float type
D.Any of the above types are acceptable

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