建筑设备监控系统的施工安装必须按照已批准的设计方案进行，工程施工前，要进行系统的设计交底。
参考答案：对
You can’t imagine what great trouble they have _____ the problem _____.
A．to solve; being talked about
B．solving; discussing
C．to solve; to talk about
D．solving; being discussed
含浆汁、淀粉或糖分多的药材，为便于干燥，通常须（）
A.切片
B.发汗
C.熏硫
D.干燥
E.蒸、煮、烫
