（）触电伤害是指电流流经人体或电弧烧灼，造成生理伤害的事故。
参考答案：对
—I'm going to Sanya for my holiday tomorrow.
—_______ [ ]
A. Have a good time!
B. You're right.
C. It's good.
D. Goodbye!
当离子交换剂遇到电解质水溶液时，电解质对其双电层有哪两种作用？为什么？
