The two balls move _______ the opposite directions _______ the same stress.
举一反三
- As long as two forces have the same magnitude and are in opposite directions, these two forces form a couple.
- As long as two forces have the same magnitude and are in opposite directions, these two forces form a couple. A: 正确 B: 错误
- The two types of stress are normal stress and stress.
- 【填空题】Depending on the context in which stress is considered, there are two kinds of stress: word stress and ____ stress.
- If the correlation between two stocks is-1,the returns____. A: generally move in the same direction. B: move perfectly opposite one another. C: are unrelated to one another as it is<0. D: have standard deviations of equal size but opposite signs.