We go to the gym to _____.[ ]
A. eat supper
B. play basketball
C. buy clothes
答案:B
除去鞣质的方法是
A.明胶沉淀法B.水醇沉淀法C.溶剂沉淀法D.酸碱沉淀法E.盐析法
胸痛伴发热,咳铁锈样痰见于
A.肺炎链球菌肺炎
B.肺脓肿
C.肺癌
D.胸膜炎
E.肺梗死