一跳水运动员从10米高台上跳水,设他在起跳后第t秒离水面的高度为h米,且h=-5

题型:填空题

问题:

一跳水运动员从10米高台上跳水,设他在起跳后第t秒离水面的高度为h米,且h=-5t2+5t+10,则运动员从起跳到入水所用的时间为______秒.

考点:求二次函数的解析式及二次函数的应用
题型:填空题

MODS的共同病理生理变化是:()。

A.微循环障碍

B.组织缺血—再灌注

C.血压下降

D.DIC

E.大量血浆渗出

题型:填空题

阅读理解。

     Visitors were still paying 20 yuan to hug Lele and had their photos taken yesterday despite a ban that forbids

any such contact with a wild animal. The ban was introduced more than a week ago.

     "The city zoo broke the law and should be prohibited," said an official at the State Forestry Administration. 

     The administration notice last Monday clearly bans contact with wild or captive animals, the abuse of wild

or captive animals for performance purposes and any improper business related to wild animal products.

     "Close contact with the chimp is the only bit that breaks the ban and we will end that soon," said Beijing Zoo

spokeswoman Ye Minxia yesterday.

     "The chimpanzee performance can't stopped overnight as we have a contract with a company scheduled to

terminate at the end of this year," she said.

     "The zoo is negotiating with the company in the hope of terminating it sooner," Ye said. She refused to

answer directly whether the chimp photo sessions were still ongoing yesterday, instead saying, "It's very likely

that we will cancel it tomorrow."

     Zoo staff confirmed photos were taken yesterday, one employee saying 2-year-old Lele "works" from lo am

t0 3 pm daily, according to "the Legal Mirror".

     Such activities not only damage the mental and physical health of the animals, but also risk the safety of

visitors, according to the official website of the State Forestry Administration where the notice was released.

     "A pet male chimpanzee bit and attacked 55-year-old Chala Nash, causing serious injuries to her face, neck

and hands at her friend's home in Stamford, Connecticut on February 16th last year," CNN reported. "The

friend, Sandra Herold, called "the police, who shot 14-year-old Travis many times after he also attacked an

officer."

     "Putting a blue T-shirt on a wild animal and training it to bare its teeth and parade for visitors might not

enhance that already- troubled image of Chinese animal protection," the State Forestry official warned. "Some

zoos even hit animals and promote themselves with commercials involving animal abuse," he said.

     "Too much focus on the profits too often results in improper treatment of animals, contributing to their early

and unnatural deaths," the notice stated.

1. Where can people most probably find the article?

A. In research reports.

B. In newspapers.

C. In science fictions.

D. In book reviews.

2. What do we learn about Lele?

A. It's used to make money.

B. It is hit by the people.

C. It attacked its owners.

D. It died unnaturally.

3. What would be the best title of the article?

A. Zoos Disobey the National Ban

B. Profit-making Zoos

C. Animals in Danger

D. Animal Abuse

题型:填空题

通信管道工程宜自来水或洁净的天然水,水的比重为1,容量为()kg/m3

A、800

B、900

C、1000

题型:填空题

男性,50岁,吸咽30年,2个月前因咳嗽、发热,经胸部透视发现右肺上叶段性肺炎,经抗生素治疗后体温正常,病灶吸收,近一周咳嗽加重,痰量不多,偶有痰中带血,伴低热,胸透右上肺又出现炎症。应首选下列哪种检查

A.痰细胞培养

B.痰找抗酸杆菌

C.结核菌素试验

D.纤维支气管镜检查

题型:填空题

发现牵引供电设备断线及其部件损坏,或发现牵引供电设备上挂有(),均不得与之接触,应立即通知附近车站,在牵引供电设备检修人员到达以前,任何人员均应距已断导线索或异物处所10m以外。

A.线头

B.绳索

C.塑料布

D.脱落搭接等异物

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