男性前阴病,临床表现为睾丸硬结,少腹或会阴胀痛,排尿困难或闭塞不通。属于
A.湿热下注B.气滞血瘀C.浊痰凝结D.肾阴不足E.肾阳虚,痰火凝结
参考答案:B
— What's your father?
— _________[ ]
A. He's working in Fukang.
B. He is always kind to others.
C. He is really a good man.
D. He's an engineer.
对青霉素G()进行结构修饰,可以得到长效的青霉素
A.侧链α位碳
B.2位的羧基
C.4位的硫
D.5位的碳