【判断题】Hairpin is RNA's secondary structure
【简答题】发夹结构(hairpin structure)
【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.
【单选题】VPN是指( )
A.
虚拟的专用网络 B、虚拟的协议网络 C、虚拟的包过滤网络
【判断题】液压系统实际应用中,当其工作方式为快进时,通常油路的连接方式为差动连 。