一般蜗杆蜗轮的传动比()。A.i≥6~60 B.i<6~2 C.i<1 发布时间:2019-08-11 17:23 │ 来源:www.tikuol.com 题型:单项选择题 问题: 一般蜗杆蜗轮的传动比()。A.i≥6~60B.i<6~2C.i<1
题型:单项选择题 so much salt in the Dead Sea that people won’t get sunk.A.It existsB.T here has existedC.There existsD.It has existed 查看答案