【单选题】A profit maximizing firm continues to operate even though it is losing money. It sells its product at a price of $100. From these facts we deduce that:
A.
average total cost is less than $100.
B.
average fixed cost is less than $100.
C.
marginal cost is increasing.
D.
average variable cost is less than $100.
【单选题】下面的程序在执行时,S语句共被执行了( )次。 i=1 while(i<=n) {for(j=ij<nj++) { S } i=i+1 }
【单选题】A profit maximizing perfectly competitive firm would never operate at an output level where
A.
it would not cover all of its variable costs.
B.
it was not earning a positive economic profit.
C.
it was not earning a zero economic profit.
D.
it was not earning an accounting profit.
【简答题】下列哪种情况不会导致高应变实测力和速度信号一峰起始比例失调? A.输入的传感器灵敏度不准确 B.弹性波速(或弹性模量)不合理 C.上部土层阻力较大 D.桩下部存在严重缺陷
【单选题】有关呼吸链的叙述,正确的是()
D.
抑制Cyt aa3,则呼吸链中各组分都呈氧化态
【简答题】英译汉:Red blood cell, RBC, erythrocyte