A:hel
B:helped
C:was helping
D:has helped
下列词语中,加横线的字读音全都正确的一组是( )
— ______ is it, please?
— It's six o'clock.
型号
FED﹣H50
额定电压
220V
最大水量
50kg
额定功率
2000W
求: