测量值的分散程度就越小,正态分布曲线也就越尖锐。( )
参考答案:对
--- ______________?
--- I don’t have enough money to buy that nice skirt.
A.How’s it going?
B.How are you?
C.What’s it like?
D.What’s the problem?
枪弹痕迹包括()、弹头上的痕迹,弹孔、弹着点痕迹和()。