【判断题】一篇文献被引频次越高,说明该篇文献价值较高。
【单选题】真核细胞.RNA聚合酶Ⅱ催化合成的RNA是( )。
【简答题】发夹结构(hairpin structure)
【判断题】一篇文献被引频次越高,说明该篇文献价值较高。
【单选题】Suppose Trial 1 is repeated except at a current of 10 rnA. At 200 sec, the volume of 02 reacted will most likely be: A.less than 0.25 mL.
B.
between 0.25 mL and 0.32 mL.
C.
between 0.32 mL and 0.39 mL.
D.
0.40 mL, because the stopcock will be closed much sooner than 200 sec.
【多选题】目标不一致是分销渠道冲突中的根本原因,主要表现在()。