A.30Ω B.40Ω C.20Ω D.35ΩA
A.2200V B.2300V C.2400V D.2500V
A.电烧伤 B.电烙伤 C.触电后摔伤 D.机械性损伤
A.40% B.60% C.80% D.70%
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