1) Large industrial areas with cities are supplied (Participle
II, часть сказуемого) from electric
networks fed (Participle II, определение) by electric
power plants.
2) The plant producing (Participle I, определение) electricity
is very powerful.
3) A steam generator includes a series of heat exchangers comprising (Participle
I, определение) tubes.
4) When handling (Participle I, обстоятельство) a battery
keep it away from your clothes