Who invented road system?

What is Integrated Treatment? Why do you need to flush a floor drain periodically? Why do you design a full adder using OR gate? Why do scientists use to design their experiments? The statement that current is equal to the voltage difference divided bythe resistance in known as? What are the three types of six way power seat systems used by gm? What is a cutting tool ending with Z? What to use to measure sewer pipes in a city? What is an electrical OHM? What is the process from converting from analog to digital called? When you add a resistor to a series circuit what will happen to the total current? What is sieve size? Automation for small scale industries? 3R of a C? Do people want more nuclear power stations to be built? Why Equivalent Circuit of real Transformer connection in series and parallel? How does technology help people with diseases or disorders of the digestive or urinary system? Is cantilever a pulley? What is closed path throuth which current can flow? What is current controlled current sources?