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

A.filled with clean water before operation
B.keep air cushion in oil collecting space during running
C.check oil level during running
D.clean inner separator with low pressure stream

A.pay attention to operating parameters
B.renew and clean separating units in time
C.check oil level in separator to prevent overload
D.check separating effect, if it is bad, flush with large capacity water pump

A.overhauling every two year
B.working at intervals
C.renewing filtration material
D.pumping bilge water from different layers respectively