诊断原发性肝癌最有意义的是（）
A.LDH
B.γ-GT
C.ALP
D.AFP
E.MAO
参考答案：D
Only after _____ your homework _________ watch TV.[ ]
A. have you finished; you can
B. you have finished; can you
C. have you finished; can you
D. you have finished; you can
液相色谱法分析水中多环芳烃时，萃取液通过净化层析柱应控制流速在（）范围内。
A.1－2ml/min
B.6-8ml/min
C.10-12ml/min
