The reform project _______ by Mr. White ________ at the meeting now.

A．put forward; is discussed

B．has been put forward; is being discussed

C．is put forward; is discussed

D．put forward; is being discussing

自动喷水灭火系统管网强度试验和严密性实验采用（）作为介质进行试验。

A．水 

B．空气 

C．氮气 

D．酒精