可以生产 Fused Alumina 这种产品的设备有 A: electric arc furnace B: casting furnace C: Higgins furnace D: electric resistance furnace

27.The furnace of a oil fired boiler should be ____ before the operating burner is№

They will _______ the project with the necessary funds. A: refer B: relate C: furnace D: furnish

Radiation heat transfer of smoke tube boiler mainly occurs in , convection heat transfer mainly occurs in . A: Furnace and smoke pipe B: Smoke pipe and furnace C: Needle tube, smoke box D: Smoke box and smoke pipe

He owns a <br/>______ by the lake in the county, which is small and made of wood A: furnace B: cottage C: costume D: migration

The electric furnace is used extensively to produce the high-grade steel _____ for the manufacture of steel alloys. A: to be required B: requiring C: required D: that required

The fire（）in the furnace under the house. A: is believed to have started B: they believe to have started C: that is believed to start D: that they believe to start

For<br/>1080 steel, normalizing is a heat treatment obtained by austenitizing<br/>and ____ cooling. A: air B: furnace C: water D: oil

The hot-melt glass is made by using a special hot-melt furnace to heat the glass above the softening point, and then the flat glass is molded in a special molding die, and then annealed. A: 正确 B: 错误

According to the passage, how did Bessemer method make the mass production of steel possible A: It directed air at melted iron in a furnace, removing all impurities. B: It slowly heated iron ore then stirred it and heated it again. C: It changed iron ore into iron which was a substitute for steel. D: It could quickly find deposits of iron ore under the ground.