设置在土质地基上的挡土墙,基底应埋在天然地面以下至少()A、1.0m B、1.5m

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问题:

设置在土质地基上的挡土墙,基底应埋在天然地面以下至少()

A、1.0m

B、1.5m

考点:公路养护工考试高级公路养护工高级公路养护工题库
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损害控制外科的实施中,最重要的措施是()。

A.手术探查在15分钟内即应决定是否实施DCS

B.采取填塞控制出血

C.控制污染

D.暂时关闭腹腔

E.不宜进行复杂的切除、重建和血管吻合手术

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When I first got an email account ten years ago, I received communications only from family,friends,and colleagues.Now it seems that every time I check my e-mail ,I have an endless seriers of advertisement and otner correspondence that do not interest the at all.If we want e-mail to continue to be useful,we need special laws that make spamming(发送垃圾邮件) a crime.

If lawmakers do not do something soon to prohibit spam,the problem will certainly get much worse。Computer programs allow spammers to send hundreds of millions of e-mails almost instantly 。as more and more advertisers turn to spam to sell their products ,individual(个人的)e-mail boxes are often flooded with spam e-mails。Would people continue to use e-mail if they ahd to deal with an annoying amount of spam each time?

This problem is troubling for inviduals and companies as well. Many spam emails contain computer viruses that can shut down the entire network of a company.Companies rely on e-mail on on e-mail for their Comployees to communicate with each other. Spam frequently causes failures in their local commnications networks, and their employees are thus unable to communicate effectively.such a situationg results in a loss of productivity and requires companies to repeatedly repair their networks.These computer problems raise productton costs of companies ,which are,in the end,passed on to the consumer.

For these reasons,I believe that lawmakers need to legislate (立法) against spam.Spammers should be fined,and perhaps sent to prison if they continue to disturb people.E-mail is a tool which helps people all over the world to communicate conveniently,but spam is destroying this conwenience.

1.What does the underlined word “correspondence” in the Paragraph 1 probably mean?                                                         

A.messages     B.ideas          C.connections         D.programs

2.According to the text, what is the major cause of the flooding spam?     

A.Companies rely on e-mail for communications.

B.More people in the world communicate by e-mail.

C.Many computer viruses contain spam e-mail.

D.More advertisers begin to promote sales through spam.

3.According to Paragraph 3,who is the final victim of spam?            

A. The business                B. The advertiser        

C.The employee               D.The consumer

4.What is the purpose of the text?

A.To inform                 B.To educate                 C.To persuade               D.To instruet

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检查刮削精度常用哪些方法?

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维生素D的良好来源是()。

A.猪肉

B.水果

C.海水鱼、肝脏、蛋黄和鱼肝油

D.人奶和牛奶

E.绿色蔬菜

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紧急放风阀是以空气压差为指令动作,电动放风阀是以()为指令动作。

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