电压降落的纵分量主要受哪个因素影响?()
A.无功
B.有功
C.频率
D.电流
参考答案:A
I heard sounds of students reading____from the classroom. [ ]
A. rose
B. raised
C. rising
D. raising
服后可致水、电解质紊乱的是()
A.磺胺甲噁唑
B.氨茶碱
C.洛匹那韦
D.羟甲香豆素
E.氯屈膦酸钠