设 f(x) 和 F(x) 分别是随机变量X 的分布密度函数和分布函数,则对任意a<b,有()
B
暂无解析
InfactPeterwouldratherhaveleftforSanFranciscothan____inNewYork.
Weneedamorecapableleader,______withstrongwillandaswellasgoodhumour.
Weallthinkthat_____noneedtomakelawstopreventtheyoungfromgettingmarriedduringtheircollegelife.