将已加热的零件先经常规淬火,然后再进一步深冷至室温以下的操作称()
A.冷处理
B.等温淬火
C.分级淬火
D.双液淬火
参考答案:A
(天津市河东区201 4年高三二模考试) 6.-What do you think made Jack so cxcited?
-______first prize in the national English Speaking Competition.
A.As he won
B.Won
C.Winning
D.Because of winning
铜绿假单胞菌感染().
A.痰白黏稠且牵拉成丝
B.粉红色泡沫痰
C.黄绿色或翠绿色痰
D.铁锈色痰
E.恶臭痰