矿灯正常充电采用（）充电法。
A、恒压
B、恒流
C、恒压串联
D、恒压并联
参考答案：D
Our government is trying its best to ____the social security system to protect people’s rights．
A．balance
B．reform
C．conduct
D．press
惊厥性全身性癫痫持续状态静脉注射苯妥英钠时，每1～2分钟注射速度最多不应大于（）
A.10mg
B.20mg
C.50mg
D.70mg
E.100mg
