问题 问答题 简答题

压缩机高压缸机封损坏后处理中的注意事项?

答案

参考答案:

清扫安装机封腔室内的动环碎块;吹扫机封密封气及排放管线,以防止其中留有异物;检查机封密封气节流孔板,以防止堵塞;更换合格滤芯;检查新机封压缩量大小,并按技术要求,利用专用工具小心地安装新机封;油箱中的润滑油用滤油机过滤24小时以上,并补充部分46#透平油;更换控制油、润滑油滤芯。

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Passage Two

American has long been considered the land of opportunity by those from other countries. Americans, too, believe that the United States provides almost limifiess opportunity for those who want to open businesses on their own.

Today, Americans are still fond of trying their hand at becoming small business people, even though only one out of two survives the first two years. Many of these people start their businesses for the wrong reasons: to get away from the paper work of their present jobs or to exchange the responsibility of their present jobs for freer life styles. But more, not less, paper work and responsibility come with ownership of a small business. John Shuttleworth, owner of the recently successful life-ecology news magazine Mother Earth, reports having had to work sixty hours straight in order to bring out the first issue.

John Shuttleworth waited years after conceiving the idea for Mother Earth before he attempted to put out the first issue. During that time, he collected as much information as he could about his proposed venture. He borrowed books about business from the library; he talked to people already established in the field; and he began planning in detail the amount of money and the kinds and numbers of supplies he would need. When he finally opened with a capital of $1,500, he set up his office in the kitchen of his home and his printing press in the garage. Due to his devotion to business his managerial skill, and his talent, Mother Earth now has a circulation of 300,000:

Not all small business succeed as well as Mother Earth has. Fifty percent of the 450,000 that start in the United States every year fail. Still, ninety-five percent businesses in the States can be described as small. Combined, these businesses account for forty percent of America’s gross national product.

According to this passage, many people start their own businesses for the wrong reasons. The reasons are wrong because they do not realize that ()

A.their own businesses will provide large income but less responsibility

B.their own businesses will not relieve them from paper work and responsibility

C.their own businesses will require longer working hours but less paper work

D.their own businesses could easily fail