承办是公文办理中的重要环节,承办的方式一般有以下( )三种。A.报上级机关承办 B

题型:多项选择题

问题:

承办是公文办理中的重要环节,承办的方式一般有以下( )三种。

A.报上级机关承办

B.传达承办

C.专案承办

D.答复承办

考点:国家公务员公共基础知识公共基础知识
题型:多项选择题

急性肾炎患儿恢复体力活动的时间是

A.水肿消退
B.肉眼血尿消失
C.血压恢复正常
D.血沉正常
E.尿沉渣细胞绝对计数正常

题型:多项选择题

阅读理解。

     There are many acceptable varieties of English throughout the world. Whichever variety is

used in your country, the most important thing is that students' pronunciation must be good

enough for another person to understand what they are trying to say.

     In a PPP lesson, teachers naturally include a good model of the pronunciation when they

are presenting new vocabulary, grammar or functional language. It is important to start by

helping your students recognize sounds before you expect them to produce them.

     Spoken British English has 44 sounds, but there are only 26 letters in the alphabet for

written English. This sometimes makes English pronunciation and spelling different, so it is not

always best to write words on the blackboard at the early stages. Also, some sounds in English

do not exist in some other languages. This can make it very difficult for students to recognize

these sounds and even more difficult for them to pronounce them correctly. So some students

need to do a lot of work on these sounds, listening to them, trying to recognize them and trying

to copy them.

     If you can understand and pronounce the symbols of the phonetic alphabet, this will help

you to pronounce any word in the dictionary. You can teach this phonetic alphabet to your

students and this will make teaching pronunciation much easier. However, you can teach

pronunciation effectively without knowing the phonetic alphabet. Pronouncing English well is

not just about getting the individual sounds right. Students need to know:

* which parts of a word are stressed (spoken louder and longer);

* which parts of a sentence are stressed;

* basic intonation patterns;

* what it means when we change the intonation in a sentence (the music of the language);

* how to link together the sounds within a sentence.

     Students need practice in all these areas to improve their pronunciation.

1. The passage is most probably from ______.

A. a book for English learning

B. a book for English teaching

C. an ad for English teaching

D. a grammar book for English learning

2. Following up the passage, the author will probably ______.

A. say how to teach the phonetic alphabet

B. emphasize the importance of correct pronunciation

C. explain in detail how to practise the five suggestions

D. write about how to teach pronunciation without the phonetic alphabet

3. In the author's opinion, ______.

A. it is not necessary to pronounce every word correctly

B. the English phonetic alphabet is a must in teaching pronunciation

C. students should pronounce every word as precisely as native speakers

D. pronunciation means more than knowing how to pronounce every single word

4. Which of the following is the best title for the passage?

A. Suggestions on Teaching English Pronunciation.

B. Listening Comes First in Teaching Pronunciation.

C. The English Phonetic Alphabet and Pronunciation.

D. Other Things to Be Done besides Pronouncing Every Word.

题型:多项选择题

航空器进入太平洋区域脱离雷达监控后,一般使用编码()

A.2000

B.7700

C.7600

D.7500

题型:多项选择题

选用流量仪表时一般要考虑哪些因素?

题型:多项选择题


阅读以下关于网络性能评估和规划方面的技术说明,根据要求回答问题1~问题6。
[说明]
某企业销售部和售后服务部的网络拓扑结构如图2-20所示。


这两个部门的员工抱怨由于新服务器的加入网络运行速率比以前慢了。网络规划设计师郭工在调查期间利用手持式诊断工具记录了如下信息。
(1)服务器A(Server A)同时是销售部和服务部的文件和打印服务器,其网络连接运行在78%的平均利用率上。
(2)销售部的网络平均利用率为45%。
(3)服务器B(Server B)是一台文件服务器,其上驻留了各种类型的文件,并允许销售部的工作站进行在线文件编辑。它占用销售部所有网络利用率的20%。
(4)销售部的两个有限授权用户经常以对等工作方式进行网络互联操作。他们占用了销售部所有网络利用率的5%。
(5)售后服务部的网络平均利用率为65%。
(6)服务器C(Server C)中有一套销售部和服务部员工频繁使用的图像库应用软件,它占用销售部、服务部两个部门的所有网络利用率的15%。
(7)流媒体服务器(Server D)中驻留一套流媒体应用软件,由服务部用于售后服务等培训工作。该应用占用了部门网络利用率的20%。
网络规划设计师郭工在调查中了解到该企业工程技术部门已花费了所有资金,已经没有了购买新的网络设备的预算资金。但该工程技术部可在三层交换机(Switch1)上提供6个1Gb/s交换端口,另外还可提供3台100Mb/s的交换机、4张1Gb/s网卡和一箱回收的10/100Mb/s网卡。

若要流媒体服务器(Server D)所提供的服务性能在可接受的范围内,则需要其所在的网络低于0.001s的延迟。假设销售部网络存在5%的冲突,平均帧长为8000bit,那么销售部网络的实际的数据吞吐量ADT是多少 (注:ADT=净利用率×帧的最大编码效率×线速率,表2-9给出了各种帧长度的开销比)
表2-9 各种帧长度开销比表
帧长度(B)用户数据长度(B)开销比
641(加37B的填充数据)98.7%
6438(无填充)50.0%
5004747.4%
10009743.8%
151814922.5%

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