When does auxiliary burner of incinerator put into operation? ()<br /> Ⅰ.tart incinerator when it is cold<br /> Ⅱ.he sludge for dealing with is little<br /> Ⅲ.he sludge for dealing with is large<br /> Ⅳ.he water and impurity in sludge are too much<br /> Ⅴ.he temperature in incinerator is low<br /> Ⅵ.ealing with little solid rubbish
A、Ⅰ+Ⅱ+Ⅲ+Ⅴ
B、Ⅰ+Ⅱ+Ⅲ+Ⅳ
C、Ⅰ+Ⅳ+Ⅴ+Ⅵ
D、Ⅰ+Ⅱ+Ⅲ+Ⅵ