BAS对空调系统采用节能方式控制,有时称为()方式。
A.DMC
B.DMS
C.EMC
D.EMS
参考答案:D
— Attention, please. The plane has to be _________ because of the foggy weather.
— Oh, bad luck! We have to wait now.
A.put on
B.put off
C.put up
D.put away
样板按使用的范围可分为()。
A、两大类
B、三大类
C、四大类
D、五大类