A.100 B.200 C.220 D.300
A.5% B.10% C.15% D.20%
A.0.1 B.0.2 C.0.3 D.0.25
A.25Hz、15V B.25Hz、110V C.50Hz、15V D.50Hz、110V
A.16.8V B.17V C.17.2V D.17.4V
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