反映变压器故障的保护一般有过电流、差动、瓦斯和中性点零序保护。
参考答案：对
According to some doctors, one of the ways to delay the aging process is to make sure that our brains
get enough ________. [ ]
A. assistance
B. sport
C. experience
D. exercise
什么叫耽误列车？
s, one of the ways to
delay the aging process is to make sure that our brains