Control of the immersion heater boiler is done by turning on and off the ______ supply to one or more elements as required.
a) water
b) power
c) steam
d) amperage
e) current
Answer: B
Control of the immersion heater boiler is done by turning on and off the ______ supply to one or more elements as required.
a) water
b) power
c) steam
d) amperage
e) current