刃磨质量不高,切削不正常,()不好,刮伤已加工表面,造成质量问题。 A.刀具前角 B 发布时间:2020-09-26 19:24 │ 来源:www.tikuol.com 题型:单项选择题 问题: 刃磨质量不高,切削不正常,()不好,刮伤已加工表面,造成质量问题。A.刀具前角B.断屑C.刀具刃倾角D.角度
题型:单项选择题 关于对SQL对象的操作权限描述正确的是______。A.权限的种类分为INSERT、DELETE和UPDATE这3种B.权限只能用于实表不能应用于视图C.使用REVOKE语句获得权限D.使用COMMIT语句赋予权限 查看答案
题型:单项选择题 He was _____ by his colleagues though he himself didn't think he had done anything special. [ ]A. thought little of B. thought poorly C. thought highly of D. thought highly 查看答案