单选题When does auxiliary burner of rotary nozzle incinerator begin to work? （） Ⅰ.hen igniting Ⅱ.he sludge for dealing with is too much Ⅲ.efore stopping incineratorAⅠ+ⅡBⅠ+ⅢCⅡ+ⅢDⅠ+Ⅱ+Ⅲ
单选题
When does auxiliary burner of rotary nozzle incinerator begin to work? （） Ⅰ.hen igniting Ⅱ.he sludge for dealing with is too much Ⅲ.efore stopping incinerator
A
Ⅰ+Ⅱ
B
Ⅰ+Ⅲ
C
Ⅱ+Ⅲ
D
Ⅰ+Ⅱ+Ⅲ
参考解析
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