自由质点受力作用而运动时,质点的运动方向是( )。
A.作用力的方向 B.加速度的方向C.速度的方向 D.初速度的方向
参考答案:C
Questions 1-4
Why do people participate in the activities of a study circle?()
A.To study a subject or to join in a cultural activity.
B.To become a member of the government appointed by the parliament.
C.To demand more financial support from the government.
D.To upgrade their knowledge at school.
咨询工程师在项目组织计划实施阶段的工作主要有:①沟通与调整;②逐层落实工作计划;③组织实施。正确的顺序是______。
A.①—②—③ B.②—③—①C.③—②—① D.②—①—③