设备发生接地故障时,跨步电压值与设备运行电压值()。
A、成正比
B、成反比
C、无关
D、不成比例
参考答案:A
—This is ________ book I’ve told you about several times.
—It’s great. I’ve never read________ more interesting one.
A. a; a B. the; the C. the; a
大黄可用治()
A.积滞便秘
B.血热吐衄
C.热毒疮疡
D.瘀血证
E.湿热痢疾