【简答题】真核生物中有些核基因的转录前体可以通过不同的拼接方式(differential splicing)形成不同的蛋白质合成模板,从而指导合成不同的蛋白质产物。试解释这一现象的生物学意义。
【单选题】Why was Sally unhappy?
A.
She could not sleep at night.
B.
She could not talk to the milkman.
C.
She had quarrelled with Mr. Smith.
【单选题】为了深刻地了解顾客的需要,避免同质化竞争,我们需要做到精确地。
【单选题】语意差分法(Method of Semantic Differential)是由Osgood 等人于1942年研究 时提出的。
【单选题】What do we learn about Microsoft’s ‘chatbot’ Taylor? A)She could not distinguish good from bad. B)She could turn herself off when necessary. C)She was not made to handle novel situations. D)She was go...
A.
She could not distinguish good from bad.
B.
She could turn herself off when necessary.
C.
She was not made to handle novel situations.
D.
She was good at performing routine tasks.
【单选题】在下面的排序方法中,平均时间复杂度为O( )且是不稳定的排序方法是( )。
【单选题】在下面的排序方法中,平均时间复杂度为O(n 2 )且是不稳定的排序方法为:()
【多选题】PID控制器是一种线性控制器,下列叙述正确的是()
A.
P 是 Proportion 的首字线,是比例的意思
B.
I 是 Integral 的首字线,是积分的意思
C.
D 是 Differential 的首字母,是微分的意思
D.
它主要根据给定值和实际输出值构成控制偏差,然后利用偏差给出合理的控制量
【单选题】She could not stand his ... remarks about her work,so she could not help crying.