改善10号钢的切削加工性能，通常采用（）热处理。
A、完全退火
B、球化退火
C、去应力退火
参考答案：C
The boy took ___ for granted that Mum would buy him some candy.
A．him
B．it
C．that
D．what
男，56岁，头部摔伤1个月，头痛、呕吐3天，CT示右颞顶新月形等密度病灶，中线轻度移位。
最可能的诊断是
A．慢性硬膜外血肿
B．慢性硬膜下血肿
C．亚急性硬膜外血肿
D．亚急性硬膜下血肿
E．硬膜下水瘤
