冷冻薯条(用油半炸处理过)
参考答案:20041000
The meeting was expected to start at 9 o'clock but the manager didn't turn up ______ twenty minutes later.
A.before
B.until
C.after
D.since
由楼宇自动化系统、保安自动化系统、消防自动化系统、通信自动化系统、办公自动化系统有机地联系在一起称为( )。
A.现代写字楼
B.智能化写字楼
C.管理现代化写字楼
D.智能现代化写字楼