浸提溶剂中加碱作为浸提辅助剂时,常用弱碱性的氨水。
参考答案：对
--- Haven’t you checked the bill? ______ does $53 plus $5 service charge come to $68?
--- Oh! I’m sorry, sir. Here is the change for you.
A． Ever since
B． Even though
C． Since when
D． As though
建筑智能系统检测主控项目有（）项及以上不合格的，系统检测结论应为不合格；
A.2，1
B.1，2
C.1，1
D.2，2
