气门与气门座研磨后,如在工作面上磨(),则可以换用细研磨砂,继续研磨。A.磨出一条整 发布时间:2017-07-26 12:22 │ 来源:www.tikuol.com 题型:单项选择题 问题: 气门与气门座研磨后,如在工作面上磨(),则可以换用细研磨砂,继续研磨。A.磨出一条整齐的灰色的无光的环带B.磨出一条较整齐而无斑痕、麻点的接触环带C.磨数分钟后
题型:单项选择题 单词填空。1. Can I buy lunch for you ______ (作为报答) for your help?2. This vase is valued ______ (少于) 40 dollars. 3. Those two countries have been _______ (交战) for a long time.4. The machine has already been _______ (拆开). 5. John mentioned several judges' names, but he didn't ______ (评价高) them.6. There is no d______ that he will get the first prize. 7. Pandas are a kind of r______ animals. 查看答案