用于联接的螺纹是()。A.内螺纹; B.外螺纹; C.梯形螺纹; D.锯齿形螺纹。 发布时间:2019-09-29 02:44 │ 来源:www.tikuol.com 题型:单项选择题 问题: 用于联接的螺纹是()。A.内螺纹;B.外螺纹;C.梯形螺纹;D.锯齿形螺纹。
题型:单项选择题 —Which dress do you like best, Madam?—Sorry, I can't decide now.[ ]A. to buy which oneB. buy which oneC. which one to buyD. which I should buy it 查看答案