所有小区P-CPICH的信道化编码是（）A.不同的 B.一样的 C.可在数据库中随机

承担资产评估、验资或者验证的机构严重不负责任，出具的证明文件有重大失实，造成严重后果的，处5年以下有期徒刑或拘役，并处或单处罚金。 ( )

一根张紧的水平弹性绳上有a，b两点，相距s=14m，．b点在a点的右方，当一列简谐横波沿此长绳向右传播时，a点达到正向最大位移时，b点的位移恰好为零，而且向上运动．经过t=1s后，a点的位移为零，且向上运动，而b的位移恰好到达负向最大位移处，求：

（1）这列简谐横波的波速．

（2）当2λ＜s＜3λ，3T＜t＜4T时，这列波的波速是多少？

（3）画出2λ＜s＜3λ，3T＜t＜4T时，1s末的波形图．

活动设计题：请设计一个大班幼儿美术绘画活动。

阅读理解。

     How does a place become a World Heritage Site (世界遗产)? It takes a lot of people to decide.

     1) If a country wants one of its places to be on the World Heritage List, it has to ask JUESCO (联合国教

科文组织).The place must be important and special. UNESCO put the Great Wall on the list in 1987 because it

said it was great part of Chinese culture and beautifully made to go with the land. When a country asks, it must

also make a plan for taking care of the place.

     2) The World Heritage committee of UNESCO talks about different places and decides whether to put them

on the list. The committee meet every June. Many experts help the committee to decide.

     3) After a new place goes on the list, UNESCO gives money to help keep it looking good. If a place is in

serious danger, it may be put on the List of World Heritage Sites in Danger. UNESCO gives special care and

help to those places.

     4) Countries have to give UNESCO regular reports about places on the list. If UNESCO thinks a country

isn't taking good care of a place, the site will be taken off the list.

1. The passage implies that ______.

A. become a world heritage site takes hard work.

B. a place with beautiful scenery is often on the World Heritage List.

C. a place which was taken good care of is often on the World Heritage List.

D. the Great Wall became a World Heritage Site for its long history.

2. If a place successfully becomes a World Heritage Site, the country _____.

A. can ask UNESCO for more money and help

B. should continue to take special care of it

C. won't take trouble to care for it

D. will try to put it on the List of World Heritage Sites in Danger

3. The passage mainly discusses ______.

A. what the World Heritage Committee of UNESCO is

B. how the World Heritage Committee of UNESCO protects a World Heritage Site

C. how the Great Wall becomes a World Heritage Site

D. how a place becomes a World Heritage Site

4. The purpose of putting a place on the World Heritage List is _____.

A. to attract more tourists from other countries

B. to get more money and help from other countries

C. to have it taken better care of

D. to make it known to other countries

下列说法错误的是 (27) 。

A．服务攻击是针对某种特定网络的攻击

B．非服务攻击是针对网络层协议而进行的

C．主要的渗入威胁有特洛伊木马和陷井

D．潜在的网络威胁主要包括窃听、通信量分析、人员疏忽和媒体清理等