题目内容

为使脱吸操作易于进行，通常可采用或。

A. 升温；减压
B. 升温；加压
C. 降温；加压
D. 降温；减压

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吸收操作中用到的仪表不包含那个（）

A. 转子流量计
B. U形管压差计
C. 填料塔
D. 孔板流量计

Fifty pence is not ______ to pay for a bar of chocolate.

A. many
B. much
C. plenty
D. big

I gave him fifty pence yesterday and advised him he ______ it.

A. saves
B. should save
C. would save
D. was saving

He ______ to the sweet shop when he dropped his fifty pence.

A. had gone
B. was going to go
C. went
D. was going