角杆拉线收紧后，杆梢应（） A.不倾斜 B.向内角倾斜 C.向外角倾斜

拼写单词，根据短文意思和所给首字母写出单词。

     Reading newspapers has becoming an important p______1 of our everyday life. Many people read

newspapers a______2 the first thing to do in the morning, others read newspapers as soon as they are

free during the day so that they can learn what is h______3 in the world.

     Sometimes, however, we do not have e______4 time to read all the news carefully, so we just take

a quick look at the front page, at other times, we may be in such a h______5 that we only have a few

minutes to look at the names of the passages.

     Newspapers can be found everywhere in the world. We can get many different kinds of newspapers

in the big cities, of course, but in some of the mountain v______6 we can see few newspapers.

     Some newspapers are published o______7 a week, but most of the newspapers are published once a

day with many pages, some even published twice a day! As you know different people e______8 reading

different newspapers, some like sports news, some like economic news and others prefer short stories.

They just choose what they are i______ 9 in.

     Today newspapers in English have the l______ 10 number of readers in the world.

人口数量的增长必须同______和______相适应．

关于机动车的安全技术检验问题，下列表述错误的是( )。

A．对登记后上道路行驶的机动车，应当定期进行安全技术检验

B．对符合机动车国家安全技术标准的，公安机关交通管理部门应当发给检验合格标志

C．对机动车的安全技术检验实行社会化，具体办法由公安机关交通管理部门规定

D．公安机关交通管理部门、机动车安全技术检验机构不得要求机动车到指定的场所进行维修、保养

治疗鼻渊头痛，风寒头痛的最佳药物是

A．麻黄

B．苍耳子

C．细辛

D．紫苏

E．荆芥

M/M/1排队论模型是分析网络性能的重要工具，假定通信量强度为ρ（信道的平均繁忙程度），则节点中的等待输出的平均分组数位为（）。

A．1/(1- ρ)

B．ρ/(1- ρ)

C．(1- ρ）/ρ

D．ρ