【判断题】A goal of efficiency is to minimize output costs while maximizing input costs.
【单选题】关于C语言的运算符和表达式,以下错误的说法是________。
A.
在C语言算术表达式的书写中,运算符两侧的操作数类型必须一致
C.
相同数据类型的元素进行算术运算(+、-、*、/)得到结果还保持原操作数的数据类型
【单选题】Decreases in input costs and the longer the length of time since a price change will tend to:
A.
. increase the price elasticity of supply.
B.
. decrease price elasticity of supply.
C.
. have no impact on the price elasticity of supply.
D.
. increase price elasticity of supply with decreases in input costs, but decrease price elasticity of supply with length of time.
【单选题】沥青混合料面层压实度,对于城市快速路、主干路不应小于( )。
【单选题】Economic costs of an input include
C.
both implicit and explicit costs.
D.
whatever management wishes to report to the shareholders.