电梯主要存在哪些问题?

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问题:

电梯主要存在哪些问题?

考点:电梯行业特有工种电梯安全基础知识电梯安全基础知识题库
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At railway stations all across Britain next week, groups of students will gather with their backpacks to wait for the trains that will carry them home for Christmas. This is as large a movement of human beings as before, but with more contradictory traffic flows, so that trains filled with the young pass each other travelling in every direction.

At first, I went home every weekend with my washing, but then those visits became less regular. How did I let my parents know I was coming? They had no phone. Perhaps I wrote to them ("Expect me with dirty shirts this Friday afternoon"), but more likely I didn't let them know, and just turned up or didn't turn up, not understanding that my parents' dashed hopes of seeing me were a greater casualty of my carelessness than a spoiled tea.

And in all this I suspect I was typical, at least of young men. As for our fathers and mothers, none of them talked of "empty-nest syndrome", even though its implication that the principal human duty is to protect and feed the young would have suited their generation better than ours. Then, the feelings of loss went without a name. Today, it's a condition with remedies, which will make parents feel more enjoyable in their life. The Mayo Clinic, for example, suggests you try to maintain regular contact with your children through "visits, phone calls, emails, texts or video chats". If you feel depressed, lean on loved ones or your mental health provider. Above all, stay positive: "Thinking about the extra time and energy you might have to devote to your marriage or personal interests after your last child leaves home might help you adapt to this major life change."

What can’t be denied, however, is that children often leave home. In modern societies, this is what they do. Christmas is the very time they can be depended on to return. For the non-religious, that may be this season’s true comfort and significance.

小题1:The main reason for the busy traffic across Britain next week is that         .

A.young students will travel home for Christmas

B.young people will travel in every direction

C.it is a large movement of human beings

D.the traffic flows will be more contradictory小题2:From the second paragraph we can learn that the writer      .

A.went home every week to wash dirty clothes

B.understood his parents’ desire of seeing him

C.didn’t understand his parents’ feelings

D.went home to see his parents regularly小题3:The underlined word “remedies” in paragraph 3 is closest in meaning to          .

A.reasons

B.excuses

C.habits

D.solutions小题4:From the last paragraph we know that        .

A.in modern society, children should leave home

B.Christmas is likely a time for family reunion

C.the significance of Christmas is celebration

D.Christmas is not a comfort for the non-religious小题5:From the passage we can infer that by writing the article the writer’s purpose is to       .

A.persuade the young to show concern for their parents

B.ask the young to go home regularly

C.make the young understand their parents’ interests

D.enable the young to be more independent

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——是由柯萨奇病毒引起的

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如图所示,AB是一质量为m的均匀细直杆,A端靠在光滑的竖直墙壁上,B端置于水平地面上,杆身与竖直方向夹角为θ,杆与地面的摩擦系数为μ,保持平衡,则此时杆与地面的摩擦力为(  )

A.mgtgθ

B.mgsinθ

C.μmg

D.μmg

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注册会计师能够提供的审计业务包括()。

A.验资业务

B.对应收账款的专门审计业务

C.盈利预测审核业务

D.简要财务报表的审计业务

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以下哪项不属于系统维护人员操作的模块()。

A.税票作废

B.银行初始化

C.用户组管理

D.用户管理

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