A.±10% B.±5.5% C.+7%,-10%
A.10kV B.22kV C.220kV
A.過電流越大,熔斷時(shí)間越長(zhǎng) B.過電流越小,熔斷時(shí)間越短 C.過電流越大,熔斷時(shí)間越短 D.熔斷時(shí)間與過電流無關(guān)