治疗药物浓度监测最常用的标本是 ()
A.血液
B.尿液
C.唾液
D.胃液
E.头发
参考答案:A
----Would you please help me with my spoken English?
----__________. First you should know practice makes perfect.
A.That’s right
B.No problem
C.Quite well
D.No, thanks.
什么是远动系统的可靠性?