单项选择题
Which of the following would not be burnt in an incinerator on board?（）
A.waste oil B.waste cloths C.Oil rags D.Waste food
单项选择题 During waste clothes being charged into an incinerator, the auxiliary burner（）.
单项选择题 The solid waste was charged into the incinerator through （）.
单项选择题 If plastic film insulation becomes damaged in air conditioning system, （） may form within the film.
