A-A+
How is crude oil brought to the surface？A．Expa
问题详情
How is crude oil brought to the surface？
A．Expansion of the hydrocarbons.
B．Pressure and pumping.
C．Vacuum created in the drilling pipe.
D．Expansion and contraction of the earth"s surface.
参考答案
正确答案：B
解析：细节题。见第一段倒数第二句话“Pressure at the source or pumping forces crude oil to the surface.”即源头压力和水泵将原油压出表面。
