A.not less than twice
B.greater at least twice than
C.not greater twice than
D.larger three times than
第1题
A.Intake manifold
B.Water-cooled exhaust system
C.After-cooler
D.Exhaust diffuser
第2题
A.convection
B.conduction
C.radiation
D.ventilation
第3题
A.After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutes
B.Close auxiliary burner firstly and then close main burner
C.After stopping fuel, restoring the position of main fuel supply valve
D.Stop blower as soon as stopping supplying fuel oil
第4题
A.notify the engineer on watch
B.isolate and secure the piping
C.throw sand on the fire
D.extinguish the fire using a combination nozzle with applicator
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