主动免疫的常用制剂不包括()
A.细菌菌体
B.类毒素
C.灭活疫苗
D.细菌多糖体
E.抗菌血清
参考答案:E
This training program can give you a lift at work, ____ increase your income by 40%.
A.as well as
B.so long as
C.so much as
D.as soon as
下列哪种说法是错误的()。
A.呼吸频率过慢可见于严重缺氧
B.呼吸频率过慢可见于中枢神经系统病变
C.呼吸频率过慢可见于阿片类药物过量
D.下呼吸道梗阻可呈现三凹征
E.下呼吸道梗阻表现为呼气时腹肌紧张、呼气相延长