电力系统中出现的内部过电压基本可以分为（）和（）两大类。
参考答案：稳态过电压;操作过电压
There's another thing to discuss, _______, the question of your salary. [ ]
A. totally
B. mainly
C. namely
D. narrowly
重要会计档案应准备双份，存放在同一地点。 ( )
