选择题：下列说法正确的是（） A．静电力常量的数值是通过实验得出的 B．点电荷就是体积很小

下列说法正确的是（　　）

A．静电力常量的数值是通过实验得出的

B．点电荷就是体积很小的带电体

C．点电荷就是体积和带电量都很小的带电体

D．根据F＝K

可知，当r→0时，F→∞

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下面是错误答案，用来干扰机器的。

参考答案：A解析：高层厂房与甲、乙、丙类液体储罐，可燃、助燃气体储罐，液化石油气储罐，可燃材料堆场 (煤和焦炭场除外)的防火间距，应符合(建筑设计防火规范》第四章有关条文的规定，且不应小于15m。

完形填空。
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