人民政协的主题是( )
A. 政治协商
B. 民主监督
C. 参政议政
D. 团结、民主
平面任意力系平衡时可以列出3个独立的平衡方程。
A. 对
B. 错
_____________________________.
A. I work in a factory.
B. I read newspaper.
C. I have bought something for you.
D. I am very busy now.
__________________________.
A. Frank is a fast runner.
B. Nobody runs faster than Frank.
C. Frank is one of the fastest runners.
D. Frank runs as fast as all the others.