A.质点组的动能只能在惯性系和质心系下定义
B.质点组的动能定理在惯性系和质心系下是成立的
C.质点组的动能在质心系下具有最小值
D.质点组的动能对所有惯性系都有相同的结果
第1题
第2题
第4题
A、数据库建设
B、数据库整合和数据挖掘
C、序列分析
D、结构分析与功能预测
E、大规模功能表达谱的分析
F、代谢网络建模分析
G、预测调控网络
H、网络普遍性分析
第6题
Section B Directions: In this part, you will read a passage about the similarity and differences between the twin brothers George and Paul. Fill in the blanks with the correct joining words that show comparison and contrast. A. in contrast to B. although C. but D. however E. both George and Paul are twin brothers. They are twenty years old and study in the same college. (1) ________ George and Paul have blue eyes and brown hair, and they are tall and slim. Many people say they are identical at the first sight. (2) ________ if you are their close friends, you will notice many differences between them. George likes to read science fiction, (3) _________ Paul likes to read poetry. (4) _________ George is an engineering major, Paul still hasn't found a major. (5) __________ George’s outgoing personality, Paul is much shier and quieter. 注意:请按题目顺序填入大写字母,字母之间空一格。
第9题
A、specialized teams
B、cross-demanded teams
C、cross-functional teams
D、simple structured teams
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