(单选题)20: It is the business of the petroleum industry to find crude oil and gas and to ______ them from the earth on-shore and off-shore.
A: retrieve
B: exchange
C: proceed
D: change
(责任编辑:admin) |
(单选题)20: It is the business of the petroleum industry to find crude oil and gas and to ______ them from the earth on-shore and off-shore.
A: retrieve
B: exchange
C: proceed
D: change
(责任编辑:admin) |