联合用药
普通感冒患者应用抗病毒药+抗生素属于
A．超剂量用药B．非适应证用药C．过度治疗用药D．超适应证用药E．有目的联合用药
参考答案：B
Harry is feeling uncomfortable. He _______too much at the party last night.
A．could drink
B．should drink
C．would have drunk
D．must have drunk
电源电压的变化对白炽灯的发光效率影响很大，当电压升高10%时，其发光效率提高（）%。
A.10
B.17
C.37
D.5
