用户在选用节能产品时，应查看国家权威认证机构按有关标准为该产品出据的什么证明？
参考答案：
节能产品认证标志。
______ has been reported in the newspaper, they were about to have peace talks between the two
countries when an accident happened.[ ]
A．It
B．As
C．That
D．What
计划发展部负责（）kV及以下配电网规划工作，并对区域内（）kV及以上电网规划提出规划建议。
A.110；220
B.35；110
C.220；500
D.110；500
