单项选择题
A.0.02 B.0.03 C.0.04 D.0.01
A.0.5% B.0.8% C.10% D.15%
A.漏电保护 B.断相保护 C.漏气保护 D.负电压保护
A.1%-10% B.5%-16% C.3%-10% D.10%-16%
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