题目内容

什么是埋弧自动焊？其工作原理如何？

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The mans first job was in

A. a newspaper office.
B. the government.
C. a construction firm.
D. a private company.

珠光体钢和奥氏体不锈钢焊条电弧焊时,生产中广泛采用E310—16和E310—15焊条,得到抗裂性能好体焊缝组织。()

焊机的安装、修理和检查应由焊工进行。()

Recently, there is a common phenomenon in the tier-one cities that a great number of white-collar workers choose to flock home or to tier-two cities. As a result, there have been many arguments for or against the homecoming tide. What is your opinion？ Write an essay of about 400 words to state your view. In the first part of your essay you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the last part you should bring what you have written to a natural conclusion or make a summary. Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.