A.1 B.2 C.3 D.4
A.繼續(xù)出爐淬火 B.等爐溫降至工至溫度產(chǎn)品再出爐淬火 C.將產(chǎn)品撈出,等一會(huì)兒再淬火 D.產(chǎn)品出爐降至室溫重新加工