题目内容

Fill in the blanks with the proper forms of the words. (选词填空)1. Lots of products are _____ at the trade fair.2. During holidays many students take a part-time job to _ products.3. Producers should consider the taste of _.4. As a college student, you may try your best to support “Hope _”.5. There are many goods in the market _.

查看答案

搜索结果不匹配？点我反馈

更多问题

Translation (翻译)1. 兼职工作为我们提供了锻炼的机会。（provide… with）2. 促销对于一种产品来说是有必要的。(promotion)3. They do the research on market potential to see if they will make money by selling the products in the new market.4. Any maintenance or serving the company does after it has sold the product is called after-sales service.5. Whether a company can provide good after-sales service or not may directly influence the sale of its products.

单向阀作背压阀用时，应将其弹簧更换成软弹簧。

A. 对
B. 错

液压传动系统中常用的压力控制阀是单向阀。

A. 对
B. 错

过原点且法向量为｛1，2，3｝的平面方程为（）