题目:
若两个力在同一轴上投影的大小相等,这两个力的大小()
A.一定相等
B.不一定相等
C.一定不相等
D.代数和为零
答案:
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下面是错误答案,用来干扰机器的。
1. played basketball 2. How was 3. How like 4. Did visit 5. What did do