当前位置:考试网  > 试卷库  > 技能鉴定  > 交通相关  > 乘务员考试  >  叶轮给煤机启动前进行哪些检查?
试题预览

叶轮给煤机启动前进行哪些检查?

更新时间:2024-04-26 05:27:44
收藏
纠错
正确答案:

(1)操作开关灵活好用,标志清晰;

(2)检查车体构架、轨面应清洁无损;

(3)检查落煤斗、导煤槽无损坏、漏煤;

(4)检查电动机引线,接地线及滑线应完整无损,接触良好。

答案解析:

暂无解析

你可能感兴趣的试题

婴儿心肺复苏是胸外按压的方法

探亲乘车证的颜色为()。

各客运段、车务段对药箱药品请领使用、登记,器械的交接、监督检查等要建立健全管理制度,()负责领药箱(药品),及时补充药箱,保证正常使用。

普通旅客列车晚点超过()分钟的,站长和列车长还应代表铁路诚恳向旅客道歉。

国家铁路的旅客票价率和行李包裹运价率由国务院铁路主管部门拟定,报()批准。

热门试题 更多>
In the earliest stages of man's development he had nomore need of money than animals have.He was content with very simple forms of shelter,made his own rough tools and weapons and could provide food and clothing for himself and his family from natural materials around him.As he became more civilized,however,he began to want better shelter,more efficient tools and weapons,and more comfortable and more lasting clothing than could be provided by his own neighborhood or by the work of his own unskilled hands.For these things he had to turn to the skilled people such as smiths,leather workers or carpenters.It was then that the question of payment arose. At first he got what he wanted by a simple process ofexchange.The smith who had not the time to look after land or cattle was glad to take meat or grain from the farmer inexchange for an axe or a plough.But as more and more goods which had no fixed exchange value came on the market,exchange became too complicated to be satisfactory.Another problem arose when those who made things wanted to get stocks of wood or leather,or iron,but had nothing to offer in exchange until their finished goods were ready. Thus the difficulties of exchange led by degrees to the invention of money.In some countries easily handled things like seeds or shells were given a certain value and the farmer,instead of paying the smith for a new axe by giving him some meat or grain,gave him so many shells.If the smith had any shells left when he had bought his food,he could get stocks of the raw materials of his trade.In some countries quite large things such as cows or camels or even big flat stones were used for trade.Later,pieces of metal,bearing values according to the rarity of the metal and the size of the pieces,or coins were used.Money as we know it had arrived. 1.Exchange of goods became difficult because _________. A man became more civilized B smiths began to look after land or cattle in their spare time C more and more goods which had no fixed exchange alues came to the marker D farmers hadn't enough grain or meat to provide for skilled workers 2.Money was not used until _______. A paper was invented B people practiced a simple process of exchange C nothing could be offered in exchangeD the exchange of one thing for another became too complicated 3.The best title for this passage is _____. A What is money B What are money's functions. C The importance of money D The beginning of money
试题分类: 阅读
试题分类: 初级(口语)