可溶性抗原定量测定常用的方法是()
A.免疫印迹法
B.ELISA(夹心法)
C.直接凝集试验
D.ELISA(间接法)
E.免疫荧光技术
参考答案:B
Many people agree that _________ knowledge of English is a must in _________ international trade today.
A. a; /
B.the; an
C.the; the
D./; the
触诊腹水患者腹腔内有无肿物,最好用()
A.滑动触诊法
B.双手触诊法
C.插入触诊法
D.冲击触诊法
E.浅部触诊法