汞作业工人的保护性膳食应增加动物性蛋白质，它含有在体内转化后可以减少汞毒害的氨基酸是

货运机动车辆用新充气橡胶轮胎

阅读判断正“√”误“×”。

      Beijing is a big city. It is the capital city of China. It has a long history (历史). There are many old buildings,

such as the Summer Palace, the Palace Museum, Tian'anmen Square and the National Museum. There are also

a lot of modern buildings. Beijing is very beautiful. We all love Beijing.

( ) 1. Beijing is a big city.

( ) 2. There are not many old buildings in Beijing.

( ) 3. Beijing is very beautiful.

( ) 4. There aren't any modern buildings in Beijing.

下列哪项是非要素膳的特点（）

A.膳食残渣多

B.以整蛋白质和蛋白质游离物为氮源

C.刺激性大

D.使用方便

E.口感较差

神经系统疾病的定位诊断中，疾病空间分布不包括

A．局灶性

B．组织性

C．弥漫性

D．系统性

E．多灶型

脑可塑性理论关于功能重组的可能因素，不正确的是

A．抑制原始反射

B．功能转移

C．同侧支配学说

D．突触阈值的变化

E．再生作用