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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.
Blank(i) Blank(ii) Blank(iii)
A.consistently
B.simultaneously
C.successively
D.monotonous
E.multiphase
F.derivative
G.constant
H.different
I.large
Blank(i) Blank(ii) Blank(iii)
A.consistently
B.simultaneously
C.successively
D.monotonous
E.multiphase
F.derivative
G.constant
H.different
I.large
| 重点单词 | 查看全部解释 | |||
| monotonous | [mə'nɔtənəs] | 联想记忆 | ||
| pressure | ['preʃə] | 联想记忆 | ||
| pipeline | ['paip.lain] | 联想记忆 | ||
| constant | ['kɔnstənt] | 联想记忆 | ||
| boost | [bu:st] | 联想记忆 | ||
| simultaneously | [saiməl'teiniəsli] | |||
| liquid | ['likwid] | |||
| successively | ||||
| consistently | [kən'sistəntli] | |||
| derivative | [di'rivətiv] | 联想记忆 |
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