分子筛脱水再生控制系统利用()的脱水方法将天然气中的水分和杂质脱除
A、加热蒸发
B、液态汽化
C、固体吸附
D、固体排斥
参考答案:C
Passage Two
What does the underlined phrase"over-consumption’refer to
A.Using too much packaging.
B.Recycling too many wastes.
C.Making more products than necessary.
D.Having more material than is neede
卷扬机固定在()上是正确的。
A、树木
B、相邻的柱子
C、专门制作的基础或地锚