下列乙型肝炎病毒感染标志物均可表示HBV复制,但必须除外()
A.HBV-DNA
B.PHSA-R
C.DNA-P
D.HBsAg
E.HBeAg
参考答案:D
When you meet the red light, you should (应该) _____________.[ ]
A. go
B. wait
C. stop
简述露天开采主要生产工艺环节.