A.50%、3次、10s B.60%、3次、10s C.70%、3次、10s D.80%、3次、10s
A.1%,±0.25% B.0.5%,±0.25% C.1%,±0.5% D.0.5%,±0.5%
A.±0.5% B.±1% C.±1.5% D.±2%