A.from 30000 to 100000 volts dc is normally required
B.from 240 to 440 volts dc is normally required
C.from 13000 to 18000 volts dc is normally required
D.from 1000 to 5000 volts dc is normally required
A.from 30000 to 100000 volts dc is normally required
B.from 240 to 440 volts dc is normally required
C.from 13000 to 18000 volts dc is normally required
D.from 1000 to 5000 volts dc is normally required