主轴获得的正向转速范围是()r/min A.11~1200 B.13~1400 C. 发布时间:2017-09-13 19:18 │ 来源:www.tikuol.com 题型:单项选择题 问题: 主轴获得的正向转速范围是()r/minA.11~1200B.13~1400C.10~1400D.14~1580
题型:单项选择题 ______, his mother has to take care of him at home.A.Being illB.He being illC.He is illD.His to be ill 查看答案