【简答题】B Economists usually study markets.Now,two Americans have won the Nobel Prize in economics for not studying markets.They will share almost one and a half million dollars for their ysis of economic...
【单选题】如图,等腰直角△ABC,AB=2,则S △ABC 等于( )
【单选题】已知△ABC ∽ △DEF,AB:DE=1:2,则△ABC与△DEF的周长比等于( )
【简答题】在△ABC中,| |=4,| |=1,S △ ABC = ,则 · 的值为( ) A.-2 B.2 C.±4 D.±2
【判断题】自然人包括中国公民、外国公民和无国籍人士。
【多选题】物动量ABC分类的方法()
C.
根据分类原则对数据进行分类,确定相应的库存管理方式
【单选题】在△ABC中,已知| |=4,| |=1,S △ABC = ,则 · 等于( )