We have to renew the ammeters and voltmeters. ( )
选项:
A: We must replace the ammeters and voltmeters.
B: The ammeter and voltmeters have been rectified.
C: We don’t have to renew the ammeters and voltmeters.
D: Either the ammeters or the voltmeters need to be renewed.
发布时间:2024-05-11 17:03:03