单项选择题
A.blowout B.kick C.gusher D.flow
An engine compartment gasoline fire requires which type...
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
An azimuth angle for a body is measured from the（）.A.ob...
单项选择题An azimuth angle for a body is measured from the（）.
A.observer's meridian B.Greenwich meridian C.body's meridian D.zenith distance
An authorized light to assist in the identification of ...
单项选择题An authorized light to assist in the identification of submarines operating on the surface is a(n)（）.
A.blue rotating light B.intermittent flashing amber/yellow light C.flashing white light D.flashing sidelight
