When a material burns in the air, heat is released and new substances are______.A．separate

A diesel engine burns _____ a gasoline engine of the same capacity in the same period of time.

The efficient burning of fuel in a diesel engine is dependent upon the ______.A.temperatur

The material in the passage could best be used in an argument for ______.A．discontinuing t

Which of the following materials can be burned？A．Painted materials.B．Plastic.C．Dry materia

When should the contract materials be sent？A．Last Friday.B．Before July 21st.C．Next week.D．

When Washington D.C.was burned in 1814 Dollety Ma