GRE Text Completion Question 359
Currently, pumps that could boost the natural pressure sufficiently to drive the crude through a pipeline to the shore do not work (i)_____because of the crude's content. Crude may consist of oil or natural gas in (ii)_____states—combinations of liquids, gases, and solids under pressure—that do not reach the wellhead in (iii)_____proportions. The flow of crude oil, for example, can change quickly from 60 percent liquid to 70 percent gas.
|A consistently||D monotonous||G constant|
|B simultaneously||E multiphase||H different|
|C successively||F derivative||I derivative|
Correct Answer: AEG