供用供电设施的维护管理,由产权单位协商确定,产权单位可自行维护管理,也可以委托供电企业维护管理。
参考答案:对
Going out for a trip with friends popular in the last few years .
A.is
B.was
C.has been
D.had been
iPhone3G和3Gs的有哪些主要区别?