Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
electricity =
1.
“d
2.
×
3.
’©
4.
ŒZ
ƒŒƒxƒ‹2.
•ÏX
SDAL“‡‰pŒêŠwZ