关于去甲肾上腺素的描述，正确的是（） A.主要兴奋α受体 B.是去甲肾上腺素能神经释

B

David, a French priest(牧师)of thirty-six, was sent to China by the church in 1872.He did well in the natural and social science besides his religious activities(宗教活动)。He was also very interested in the rare wild animals and plants in China.

On May 4th, 1879, after searching half a month in the western part of Baoxing, Sichuan the hunters hired(雇用)by David succeeded in bringing him a "black-and-white bear". "The bear is extremely lovely", he wrote in his diary excitedly. Meanwhile, he felt it might be a new species (物种)never discovered by scientists.

He then decided to send it to Paris for a further study. Unfortunately the poor "black-and white" bear died of Jolts(颠簸)of the mountain roads and the climatic (气候)change. He had to send its pelt (皮毛)to the National Museum in Paris for display (展览)。In fact, the so-called "black-and white" bear was neither a bear nor a cat. After a complete study, Milla Edwards, head of the museum, judged that it was a new species. He gave the "giant panda".

The discovery made the world excited and Baoxing was also made famous for "home of the giant panda"

60．From the passage we can see that David mainly came to China to ____.

A. learn Chinese science and history     B. look for a panda for church

C. do something on religion(宗教)       D. study the wild animals and plants in China

61．The word "rare" in this passage means ____.

A. very hard to find  B. worth no money  C. easy to find    D. running very fast

62．The first giant panda was caught ____.

A. by David, a French priest        B. quite by accident

C. with a lot of difficulty            D. after the hunters followed it for half a month

63. Which of the following is not true according to the passage?

A. The giant panda died when it was on display.  

B. David had never seen a giant panda before.

C. Milla was sure the animal was neither a bear nor a cat.

D. The discovery made the world excited with interest

加油站的信息系统应采用铠装电缆或导线穿钢管配线。配线电缆金属外皮两端、保护钢管两端均应（）。

A、接零

B、并接

C、断开

D、接地

在防护费用法中，假设对一个拟建飞机场进行噪声污染损失评价。由于机场附近住户为避免噪声污染，可选择迁居到一个较为安静的地区，或对房间设置隔声设备，两个方案都需要支付一定的费用，这些费用包括：①反映房主附加的价值或实际租金超过房屋市场价格的消费者剩余 S；②由噪声引起房产价格降低D；③搬迁费用只；④隔声的费用G，此时剩余噪声(原有噪声为N)为N''。则决定留下来并设置隔声设备的住户必然满足()。

A．S+D+R＜N＜G+N'

B．N＜G+N'＜S+D+R

C．G+N'＜N＜S+D+R

D．G+N'＜S+D+R＜N

下列选项中不属于结构化程序设计方法的是( )。

A) 自顶向下
B) 逐步求精
C) 模块化
D) 可复用

密度1.50g/cm³的泥浆100方，用1.02g/cm³的海水降密度到1.30g/cm³，需加海水（）方。

A.71.4；

B.72.5；

C.81.8；

D.67.6。