Look up the names of the largest contractors reported by ENR in its three main categories: Heavy and highway, nonresidential building, and multiunit housing. Notice that the list also includes their ranking for the previous years. Were they the largest the previous year?

Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency