HBV基因编码特点为 ()
A.无感染性
B.42nm
C.正链及负链DNA可分别编码,无内含子
D.22nm
E.前核心蛋白
参考答案:C
I don't think the experiment is ________ failure. At least we have gained ________ experience.[ ]
A.a; an
B.a; /
C./; an
D./; /
业主在专项维修资金的()等各个环节都享有监督权。
A.存取
B.收取
C.使用
D.统筹
E.代管