A.單觸點(diǎn); B.無(wú)觸點(diǎn); C.多觸點(diǎn); D.雙觸點(diǎn)
A.10s; B.8s; C.5s; D.3s
A.?dāng)嗦罚?br /> B.短路; C.無(wú)基極電壓; D.以上各項(xiàng)均正確