????????????av??????????????????????????????????,?????,????,?????,???,??,???·??·???,????,Creating the grid by itself extra resilient is equally significant. Improved electronic firewalls at grid Procedure facilities thwart hacker intrusions. Burying transmission lines safeguards them from storms. Batteries to keep electricity for emergencies are

?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????……???????????????????????????????????????????????????????????????????