试题与答案

电场中某三条等势线如图实线a、b、c所示。一电子仅在电场力作用下沿直线从P运动到

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题型：选择题

题目：

电场中某三条等势线如图实线a、b、c所示。一电子仅在电场力作用下沿直线从P运动到Q，已知电势φa>φb>φc，这一过程电子运动的v一t图象可能是下列各图中的

 

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B解析：早期生物学效应是暴露因素导致分子水平的可检测的功能和结构的改变，常可用于早期诊断和预防筛检。

考点：电场强度的定义式
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