在化工生产中,应用于均相反应过程的化学反应器主要有()反应器和()反应器。
参考答案:釜式、管式
主扇风机房排风口噪声应控制在()分贝以下。从而基本消除风机噪声对环境的不利影响。
A、95
B、85
C、90
It is difficult to judge whether what he said_________.
A.is worth to be praised
B.is worthy being praising
C.is worthy of being praised
D.is worth being praised