某一物体悬挂在细绳下端，由静止开始沿竖直方向运动，运动过程中_爱下问搜题

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问题多选题

某一物体悬挂在细绳下端，由静止开始沿竖直方向运动，运动过程中物体的机械能与物体位移关系的图像如图所示，其中0→s₁过程的图线为曲线，s₁→s₂过程的图线为直线。根据该图像，下列判断正确的是

[ ]

A．0→s₁过程中物体所受合力一定是变力，且不断减小

B．s₁→s₂过程中物体可能在做变加速直线运动

C．s₁→s₂过程中物体可能在做匀速直线运动

D．0→s₂过程中物体的动能可能在不断增大

答案

CD

单项选择题

A project team is suffering from misunderstandings between team members who have different cultural backgrounds. The project manager is evaluating how to improve communication and collaboration. Which of the following statements is not true

A) Only those who realize that cultural differences are a resource to be fully utilized will survive in international project business.
B) There is a common ground for people from different cultures on which they can interact without unsolvable conflicts.
C) Cultural differences will always remain an obstacle to be overcome for cross-cultural projects.
D) Cross-cultural competence is a critical lever for competitive advantage in international project business.

填空题

测量方法不正确，会出现 ______．如果测量方法正确，测量值与真实值之间还有差异，这个差异叫 ______．