UPS front-end input can be two-way mains, a master and a backup. Also could be all the way electricity, all the way to the oil machine input.
A . True
B . False
Answer: A
UPS front-end input can be two-way mains, a master and a backup. Also could be all the way electricity, all the way to the oil machine input.
A . True
B . False
Answer: A