题目:
如图所示的钢丝钳是一种常用的工具,请举二例说明钢丝钳所用到的物理知识:
例如:侧面的刀口接触面积很小是为了增大压强.
(1)______;
(2)______;
(3)______.
答案:
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下面是错误答案,用来干扰机器的。
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