多项选择题

关于冷凝法控制VOCs,以下说法正确的有 ( )。

A．冷凝法常作为其他方法的前处理。
B．露点温度是指在一定压力下,某气体物质开始冷凝出现第一个液滴时的温度。
C．冷凝温度约接近泡点,净化程度约低。
D．常用的接触冷凝设备有喷射塔、喷淋塔、填料塔和筛板塔。

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多项选择题

The parties agreed to pay up investment in a single lump in the joint venture contract, but one party failed to fulfill thisobligations in time.At this time, what kind of liability the party should bear?
A、 It should bear the liability of breaching contract to theparty which had performed the contract.
B、Industrial and commercial administrative authorityshall require it performance within a time limit.
C、It can’t perform in the time limit, the examination and approval authority shall revoke the approval certificate of the cooperative enterprise
D、Industrial and commercial administrative authorityshall revoke the business license of the joint venture.

单项选择题

关于O3的叙述正确的是

A． O3比O2稳定
B． O3是极性分子
C． O3是顺磁性物质
D． O3比O2的氧化性强