A.質(zhì)量檢驗(yàn)B.電子設(shè)計(jì)C.PCB設(shè)計(jì)D.SMT驗(yàn)收
A.20%B.30%C.40%D.50%
A.0.5VB.1.0VC.1.5VD.2.0V