单项选择题
A.提高空载电压 B.减小冲击电流 C.易于触发氙灯 D.便于自动触发
A.电压串联 B.电压并联 C.电流串联 D.电流并联
A.vceo B.Iceo C.Icbo D.pcm
A.0.8% B.1% C.1.2% D.1.5%
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