国产牙轮钻头分为钢齿牙轮钻头和镶齿钻头两大类,共()系列。A、4个 B、8个 C、6 发布时间:2017-07-12 00:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 国产牙轮钻头分为钢齿牙轮钻头和镶齿钻头两大类,共()系列。A、4个B、8个C、6个D、12个
题型:单项选择题 The company designed a new car last month and about 500 cars of this type _____ in the factory next month.[ ]A. were produced B. will produce C. have been produced D. will be produced 查看答案