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單項選擇題

An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.

A.blowout
B.kick
C.gusher
D.flow

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

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

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