单项选择题
A.meet the applicable standards B.be marked as additional equipment C.be stowed in a separate area D.All of the above
Any extinguishing agent used on a Class “C” fire must h...
单项选择题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
Antares is found in what constellation?（）A.ScorpioB.Cor...
单项选择题Antares is found in what constellation?（）
A.Scorpio B.Corvus C.Libra D.Corona Borealis
An undocumented vessel with 10 people aboard and operat...
单项选择题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
