餐饮原料供货市场纷繁复杂，原料采购方法也多种多样，具体采购方法有（）、无选择采购、成

以下叙述正确的是

A．压力或张力过大发生断裂，产生位移形成断层

B．压力或张力过大都能形成褶皱

C．岩体发生破裂就是断层

D．压力过大先形成断层，后形成褶皱

Welcome to the World Expo 2010 Shanghai China. In order to protect the interests and rights of visitors and ensure a safe and orderly visit, the organizer of Expo 2010 has made these Terms and Conditions.

Article 1  Scope of Application

These Terms and Conditions are applicable to (适用于) all visitors to Expo 2010, including those who enter the Expo Site with valid tickets and children at or below 1.2m at the time of entry, who are suitable for free admission.

Article 2  Operation Time

The operation time of the Expo Site shall be 9:00 ~ 24:00. The opening hours of the exhibitions shall be 9:30 ~ 22:30. Visitors shall enter the Expo Site before 21:00 and leave before 24:00 on the day of admission. Those with evening admission tickets may enter the Expo Site between 17:00 and 21:00.

Article 3  Orderly Entry  

Visitors shall go through ticket pre-check, security check and ticket confirmation in an orderly fashion before entering the Expo Site. Those who refuse to cooperate may be denied entry by the Organizer.

Children suitable for free admission and other visitors with mobility difficulties may only enter the Expo Site when accompanied by adults. Those under the influence of alcohol and the persons suffering from mental disorders are not allowed to enter.

Article 4  Exhibitions and Performances

Visitors may visit exhibitions and watch performances in the Expo Site at no additional charge.

1. Which of the following statement is true according to the text?

A. At the time of entry ，children below 1.2m needn’t buy tickets to enter the Expo Site.

B. Visitors must pay additional fee to watch performances in the Expo Site

C. Children below 1.2m can enter the Expo Site by themselves.

D. Before entering the Expo Site, visitors shall go through ticket pre-check and security check.

2. Mr.Wang has got an evening admission ticket , how long can he stay in the Expo Site at most?

A. 15 hours.      B. 13 hours.      C. 7 hours.      D. 4 hours.

3. What does “Those under the influence of alcohol " mean?

A. Visitors with mobility difficulties.  

B. The persons who are drunk.

C. Visitors who refuse to cooperate.   

D. The persons who sell alcohol.

新中国六十周年国庆阅兵式上的各种新武器、新装备，展示了我国人民军队的高科技成果．其中的某型号的两栖步兵战车如图所示，战车与战车上人的总质量为22t，每条履带着地的面积为2m²．（g=10N/kg）

（1）该战车在 * * 长安街上接受检阅时，对水平地面的压强为多少？

（2）该战车具有水上打击目标和运送的功能，那么在水上演习中该战车浸入水中的体积约为多大？

（3）坦克履带上有许多棱，为了防止损坏 * * 广场的路面，请你设计一个切实可行的方案来解决这个问题．

水库淹没实物指标调查内容中的集镇是指以下哪项？（）

A.经县级以上人民政府确认的非建制镇

B.乡级政府驻地和经县级人民政府确认的由集市发展而成的作为农村一定区域经济、文化和生活服务中心的非建制镇

C.县级政府驻地和经县级人民政府确认的由集市发展而成的作为农村一定区域经济.文化和生活服务中心的建制镇

D.经县级人民政府确认的由集市发展而成的作为农村一定区域经济、文化和生活服务中心的建制镇和县城以外的建制镇

不属于1岁以内婴儿计划免疫的是（）

A.脊髓灰质炎疫苗

B.肺炎球菌疫苗

C.麻疹疫苗

D.百日咳疫苗

E.乙肝疫苗