题目内容

相对渗透率与饱和度和润湿性有关。

A. 对
B. 错

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毛细管力在采油中的影响都是不利的。

A. 对
B. 错

油井完井和井下作业中,由于贾敏效应,常会使井的产量降低。

A. 对
B. 错

Elizabeth decided to make her ____ plan because she will graduate next term.

A. profession
B. career
C. vocation
D. occupation

The price ____ is still upwards, and many housewives find it hard to afford daily items.

A. trend
B. drift
C. tide
D. float

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