A、prehistoric power B、mystical power C、suuuuuuper power
A、UNINTERRUPTIBLE POWER SUPPLY B、UNINTERRUPTIBLE POWER SUPER C、UNCHANGEABLY POWER SUPPLY D、UNCHANGEABLY POWER SUPER
A、in series with the power source and load B、in parallel with the power source and load C、insuring correct polarity D、using the lowest range possible to prevent instrument damage
A、A.every 6 months after initial installation B、B.every 12 months after initial installation C、C.every 24 months after initial installation D、D.on or before the expiration date of the power source
A、the main source of energy B、emergency source of electrical power C、the reserve source of energy D、all of above