淬火与高温回火相结合的热处理工艺称为调质。
参考答案:对
It's dangerous for children _____ that tall tree. [ ]
A. are climbing
B. to climb
C. climb
D. climbed
纤维支气管镜检查的适应证不包括()
A.怀疑肺或支气管的出血,需明确部位及性质
B.支气管内异物
C.支气管内膜结核
D.严重心脏病
E.肺内孤立肿块