患者,20岁,女性,诊断为青少年牙周炎,如果应用抗生素治疗,最佳选择是()
A.四环素
B.甲硝唑
C.麦迪霉素
D.非甾体类抗炎药
E.牙周宁
参考答案:A
China’s hurdler Liu Xiang was disqualified due to false start in the 60-metre event, _____ his rival Dayron Robles of Cuba an easy win of 7.66 seconds.
A.giving
B.given
C.to give
D.gave
通常电池的工作状态有浮充和均充,对于48V标称电压电池组来说其对应的工作电压分别是-56.4V和()。