劳动者由于所获得的知识和技能存在差异,从而导致他们之间存在收入差别,这是( )的基本内容。
A.收入分配理论
B.劳动力需求理论
C.劳动力供给理论
D.人力资本供给理论
参考答案:D
The use of the F - distributed test statistic,,to compare the variances of two populations requires all of the following EXCEPT:()
A. two samples are of the same size.
B. samples are independent of one another.
C. populations are normally distributed.
喷管进口截面的气流参数为:p=2.05×105N/m2,T=865K,υ=288m/s,A=0.19m2;燃气的气体常数R=287.4J/(kg·K),燃气质量流量为()kg/s。
A.41.1
B.42.1
C.44.1
D.45.1