线路在送电时，应先（）。
A.调整消弧线圈后送电
B.送电后调整消弧线圈
参考答案：A
以下属于广州越秀公园内景区的有（）等。
A.中山纪念碑
B.四方炮台
C.伍廷芳墓
D.大华兴寺
A little knowledge is _______, because it can cause people to think they are more expert than they really are.
A．expensive
B．ordinary
C．precious
D．dangerous
