【判断题】状态变量描述法仅适用于线性时变多输入—多输出的连续系统。
【多选题】What types can chromatin be divided into ( )
【单选题】Chromatin in which of the following states is the most euchromatic?
C.
in a transcribed gene during G1 phase
D.
in a silenced gene during M phase
【单选题】蓄电池将电能转化为( )而储存起来的过程,称为放电过程。
【简答题】活性染色质(active chromatin)
【单选题】About the chromatin, which is not right?________
A.
Chromatin consists of DNA and RNA only.
B.
Histone proteins are alkalic and postively charged.
C.
The nucleosome core protein consists of eight histone subunits.
D.
H1 histone is not found in the core protein.
【判断题】状态变量描述法仅适用于非线性时不变多输入—多输出的离散系统。
【判断题】水泥混凝土立方体抗压强度试验时,试件的尺寸越小测得结果越高。