抗体的化学本质是[ ]
A.糖类
B.球蛋白
C.脂质
D.核酸
答案:B
Can you tell me ?
A、how old your brother is
B、how old is your brother
C、your brother is how old
流行性斑疹伤寒的临床特征()
A.皮疹
B.发热
C.脑膜刺激征
D.肝脾肿大
E.中毒性心肌炎