單項(xiàng)選擇題

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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單項(xiàng)選擇題

An azimuth angle for a body is measured from the（）.

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

單項(xiàng)選擇題

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

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