所谓电力系统稳定性，指()。
A、系统无故障时间的长短C
暂无解析
辛亥革命是我国近代史上一次比较完全意义上的资产阶级民主革命，这次革命()
Freemedicalserviceis_______tonearlyallthecollegestudentsinChina.
Hetriedto_______relationswithhisformerwifebuthefailed.
IntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.
Withoutapropereducation,peoplecould_______allkindsofcrimes.
