题目: 如果向东走5m记作+5m,那么向西走8m记作( ),( )m表示起点。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0620/7aa7664c797b94bb0518215e41b1f8f8.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:问答题 Directions: Write an essay of 160--200 words based on the following drawing. In your essay, you should1) describe the drawing briefly,2) explain its intended meaning, and3) support your view with an example/examples.You should write neatly on ANSWER SHEET 2. 查看答案
题型:选择题 物体受到两个方向相反的力的作用,F1=8N,F2=10N,当F2由10N逐渐减小到零的过程中,这两个力的合力的大小变化是 [ ]A.逐渐变小 B.逐渐增大 C.先变大后变小 D.先变小后变大 查看答案