【单选题】物理层的作用是在一条物理传输介质上,实现数据链路实体之间透明地传输各种数据的
【单选题】Positional relation is also called_______.
【单选题】当合同约定的违约金过分高于因违约行为造成的损失时 , 违约方 ( ) 。
【单选题】Which of the following statements correctly describe the relation between a t-distribution (short for T) and a standard normal distribution (short for N)?
A.
N is centered (中心) at 0, whereas T is centered at n-1
B.
N has a larger standard deviation (标准差) than T
C.
N is just another name of T
D.
T has a larger standard deviation than N
【单选题】当合同约定的违约金过分高于因违约行为造成的损失时,违约方( )。