若两总体的样本平均数分布为非正态分布,要求检验两独立样本平均数的差异,则应选用:()
A.t检验
B.符号检验
C.符号秩序检验
D.中数检验
参考答案:D
Everyone has his own dreams, but not all the dreams can always _________.
A.come true
B.come over
C.keep true
D.get out
发电机的空载转速