问题 问答题

某机械设备安装公司承接某16层写字楼电梯安装工程,在机房、井道等土建部分按图纸要求完工后,该公司组织了一支专业电梯安装队伍进行电梯安装工作。
电梯组装完成后经过调试和校验,报请经国务院特种设备安全监督管理部门核准的检验检测机构进行监督检验,经检验合格后正式投入使用。
[问题]

答案

参考答案:

1.电梯安装前的准备工作有: 

(1)将拟进行安装的电梯情况书面告知工程所在地直辖市或设区的市级特种设备安全监督管理部门; 

(2)对电梯井道、机房等与电梯安装有关的建筑结构形位尺寸进行复核,以验证其与随机提供的土建布置图的一致性; 

(3)进行设备开箱检查,核对产品合格证,重要部件如门锁装置、限速器、安全钳及缓冲器等的型式试验证书复印件。零部件等应与装箱单所列相符; 

(4)设备经外观检查无明显的损伤,有封记或色标的部分齐全完整; 

(5)层门的预留孔没有高度不小于1.2m的安全保护围封,并保证有足够的机械强度,机房通向井道的预留孔洞设置临时盖板; 

(6)如机房和井道内永久照明还未安装,则应先布置施工用临时照明工程或先安装永久性照明工程以临时电源供电,以保证施工需要。 

2.电梯工程的主要安装工序是: 

(1)井道放基准线安装导轨; 

(2)机房内机械、电气设备安装; 

(3)轿厢组装、对重及附件组装; 

(4)层门及附件安装; 

(5)配管配线,以及层门指示灯盒、召唤盒和消防开关盒安装; 

(6)限速、限位等安全部件安装; 

(7)轿厢内装饰装修; 

(8)层门门厅处装饰装修。 

3.电梯工程的机电部件在安装时的协调要点是: 

(1)电梯设计制造时有着许多为确保安全使用的安全保护,其中较多的需要机电部件协调动作才能发挥作用。因而安装组合中要特别关注保护装置机电部件的协调,以满足其预期功能要求; 

(2)由制造厂组装完成经调试合格后加以封记的机电协调动作部件,是一个整体,在施工时不得进行拆封调整; 

(3)需现场安装时进行调整的整体机电协调动作部件,经调整合格后加以封记,以便日后检查或监视; 

(4)虽然机和电的部件两者不是一个整体,各自安装在相应位置,但两者有对应的动作联系,通常电气部件位置相对固定,机械部件在电梯运行时处在运动状态,起保护动作作用时两者有一定的撞击,因此部件的安装位置要正确,误差在允许范围内,固定用的零件齐全,防松性能良好; 

(5)无撞击发生的感应式相互作用的机电协调动作部件,要注意配合的间隙尺寸,使灵敏度符合要求; 

(6)经电梯整机调试证明,机电协调动作部件安装正确,保护作用可靠后,未加封记或色标的机械部件或电气部件要加封记或色标。

单项选择题

Imagine going to sleep in October and waking up in May! Well, marmots and ground squirrels stay warm by sleeping all winter. All this time, they do not wake up once. This special kind of sleep is called hibernation. During this sleep, the heart slows down, and the animal breathes more slowly, it doesn’t move around, so it uses less energy.
Animals like the marmot and the ground squirrel inhabit the coldest parts of the world. They need special talents to survive in these frigid places. Their furry coats keep them snug when the temperature falls below zero. It often gets this cold in the Arctic, a land that is just below the North Pole.
Before the long winter, some animals eat and eat. After a while, they grow very fat. When the winter comes, they live on the fat saved up in their bodies. Layers of fat keep an animal warm.
Arctic animals also have other ways to beat the cold. Rabbits in the Arctic, for example, have very small ears. Small ears keep heat in, while big ears let it out. Small things usually keep heat in. Have you ever slept in a room that is very small, and noticed how hot it can get.’
It rarely gets warm in the Arctic. But although summer seasons there are very short, the sun shines brightly. Plants seem to spring up before your eyes! Animals such as caribou look forward all year to summer, when they can eat fresh grass again. Every minute of sunshine is important to their lives.

After reading this passage, we can guess that when an animal moves around, it ______.

A.is very restless

B.uses more energy

C.is looking for food

D.has lost its young

单项选择题