根据机电安装的工程规模标准，属于小型通风空调工程的是( )。

A．单位工程造价300万元

B．空调制冷量200冷吨

C．建筑面积10000㎡

D．空调制冷量300冷吨

Which of the following groups is defined as "newlyweds"

Which of the following groups is defined as "newlyweds"
A．Couples who are married for less than two years.
B．Couples who are married for less than five years.
C．Couples who are married for more than five years.
D．Couples who are married for more than twenty years.

A．Couples who are married for less than two years.

B．Couples who are married for less than five years.

C．Couples who are married for more than five years.

D．Couples who are married for more than twenty years.