问题:
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
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
● 参考解析
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