正清风痛宁注射液中，附加剂亚硫酸氢钠的作用是
A．金属离子络合剂B．渗透压调节剂C．抑菌剂D．增溶剂E．抗氧剂
参考答案：E
9．China Tourism Day should fall on 15th, July, according to Sichuan people,______Deng Xiaoping paid a visit to Mount Emei, and made an important speech on tourism.
A．which
B．on which
C．of whom
D．Who
CH50减低可见于（）
A.组织损伤
B.SLE
C.病毒性肝炎
D.急性炎症
E.感染性心内膜炎
