问题 问答题 简答题

日检及维护项目有哪些?

答案

参考答案:

⑴运行时检查支架振动情况。

⑵运行时检查承载牵引索在托索轮上的运行情况;

⑶运行时检查吊箱、吊杆过驱动(迂回)轮的位置是否正常,同时清洁座椅靠背;

⑷检查吊箱保护架的活动情况及功能;

⑸检查驱动机减速器方向轴运转时是否有噪音;

⑹检查驱动机减速器温度不超过环境温度60℃。

⑺检查驱动机两个制动器制动闸是否清洁干净,是否有油渍。

⑻检查驱动机C型制动器预应力行程为25mm,两边闸瓦间隙各1mm,钳式闸瓦两边间隙各为1.5mm,两种制动器的行程监控开关,位置是否正常;各种销轴、弹簧及坚固件是否完好。

⑼每天运营前空载检查制动器功能。

⑽检查液压系统各手柄、监控开关位置是否正常,系统接头及密封件有无渗漏现象。

⑾检查液压站油泵电机停机压力16mp,油泵重新启动压力13mp。

⑿目视液压站油质及油量。⒀检查索道整个运转系统中的结构件、支撑、坚固件有无异常,运转中的各种轴承有无噪声、发热等现象。

选择题
单项选择题

Questions 53 to 57 are based on the following passage: ( 10 分 )  How did a peddler of cheap shirts and fishing rods become the mightiest corporation in America The short version of Wal-Mart’s rise to glory goes something like this:in 1979 it racked-up a billion dollars in sales; by 1993 it did that much business in a week; by 2001 it could do it in a day.  It’s a shocking tale--one that propelled Wal-Mart from rural Arkansas, where it was founded in 1962, to the top of the Fortune 500. Sam Walton, Wal-Mart’s founder, pushed sales growth continuously while squeezing costs with sophisticated information technology. He exhorted employees to sell better with the "ten-foot rule" ( greet customers if they are that close ). He was, in other words, an early evangelist for the first commandment of today’s economy: service rules. Wal-Mart, in fact, is the first service company to rise to the top of the Fortune 500. When Fortune first published its list of the largest companies in America in 1995, Wal-Mart didn’t even exist. That year General Motors was America’s biggest company, and in every year that followed,either GM or another mighty industrial, Exxon, was No.1.  Wal-Mart’s achievement caps a bigger economic shift I from producing goods to providing services. Manufacturing’s share ofU. S. employment peaked in 1953, at 35%. It has been declining steadily since. In the decade that will end in 2010, the Bureau of Labor Statistics figures that goods-producing industries will create 1.3 million new jobs, compared to 20 million for service industries. To look at it another way, today there are about four times as many people working in service jobs as in other kinds of jobs. And even within manufacturing, services are an increasingly large share of operations.  As America got richer, consumption got more complicated. With more income to throw around, people started spending more on services -- movies and travel, mortgages to buy houses, insurance to protect those houses, the occasional weekends at a luxury hotel. Fortune calls this a shift in the demand pattern. Over the next few years, only three of the ten fastest-growing occupations ( software engineers, nurses, and computer support ) pay middle-class salaries. The rest could be called Wal-Mart kinds of jobs -- cashiers, retail assistants, food service, and so on. In short, the service economy is delivering more good jobs than ever before.

To take Wal-Mart to the top of the Fortune 500, Sam Walton __

A.promoted sales and cut costs at the same time

B.exhorted employees to sell better with the "ten-foot rule"

C.spared no efforts to push sales growth

D.cut back costs with information technology