A.10 B.15 C.20 D.25
A.±0.5%、±0.5% B.±0.5%、±1% C.±0.2%、±0.5% D.±0.2%、±1%
A.±0.2%、±2% B.±0.5%、±1% C.±0.5%、±2% D.±0.2%、±1%