问题
-
When there is a flame failure in an automatically fired auxiliary boiler, the _____.
-
Failure of the burner flame in an auxiliary boiler would probably be a result of .A.water
-
A dazzling white burner flame in the boiler furnace indicates _____.A.no combustionB.depos
-
Wires should have each feature of the following except ____.A.flame retardantB.moisture re
-
The evening sky flamed with red and orange.(英译中)
-
The firemen were unable to control the blaze.A.flowerB.blowC.flameD.stroke
冀公网安备 13070302000102号