单项选择题

An engine compartment gasoline fire requires which type of extinguisher?（）

A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above

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单项选择题

A.observer's meridian
B.Greenwich meridian
C.body's meridian
D.zenith distance

单项选择题

A.blue rotating light
B.intermittent flashing amber/yellow light
C.flashing white light
D.flashing sidelight

单项选择题

A.located in an air-conditioned area
B.mounted in the passenger compartment
C.protected by a collision bulkhead
D.permanently mounted