In a double conversion offline UPS, the primary power source is the inverter, and the power feed from the utility is constantly recharging the battery, which in turn powers the output inverter. _________________________
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Q26: Electronic monitoring includes _ systems.
A) blocked video
B) local video
C) open-circuit
Q27: Mechanical locks can accept a variety of
Q28: _ locks can be changed after they
Q29: When the lock of a door fails
Q30: Common forms of mechanical locks include electric
Q32: Smoke detection systems are perhaps the most
Q33: Class C fires are those fueled by
Q34: Manual fire detection systems include human responses,
Q35: Gaseous emission systems can be used in
Q36: A variation of the dry-pipe system is
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