单项选择题
An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.
A.blowout B.kick C.gusher D.flow
单项选择题 An engine compartment gasoline fire requires which type of extinguisher?（）
单项选择题 An azimuth angle for a body is measured from the（）.
单项选择题 An authorized light to assist in the identification of submarines operating on the surface is a(n)（）.
