EPA Section 608 rules require capture of 80% of the HCFCs and HFCs from a small appliance sealed system with a non-operating compressor if technicians are using; A) a system-dependent (passive) process. B) a self-contained (active) process. C) either a passive or an active recovery process. D) neither recovery process.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

The higher the astm grain size number, the finer the gran is. a)-true b)-false