消除或减小加工硬化的措施有()
A.加大刀具前角
B.改善工件的切削加工性
C.提高刀具刃磨质量
D.降低切削速度
参考答案:A, B, C
—Hi, Julie. Let's go out _______.
—Sorry, there _______ a lot of homework for me to do. [ ]
A. play; are
B. to play; is
C. playing; is
D. to play; are
眼压升高同时出现羊脂状角膜后沉着物常见于()
A.Marfan综合征
B.溶血性青光征
C.青光眼睫状体炎综合征
D.广泛视网膜缺血所致青光眼
E.虹膜角膜内皮综合征