校验高压断路器的灭弧能力时，( )用开断电流代替断流容量。
A．宜
B．不宜
C．应
D．不应
参考答案：C
She would move quietly up to the sparrow on a small tree just to get a better look, her face __________ with childlike expressions at one of God’s simple wonders.
A．shone
B．shining
C．having shone
D．being shone
补阳还五汤中用量最大的药物是（）
A.黄芪
B.当归
C.川芎
D.红花
E.桃仁
