【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】对于 n>5 ,在下面循环语句中循环体执行的次数为( )。 for(int i=1; i if(i>n/3) break;
【单选题】有关呼吸链的描述正确的是( )
B.
呼吸链的组分通常按 E 0 由大到小的顺序排列
D.
抑制 Cytaa3 ,则呼吸链中各组分都呈氧化态
【简答题】英译汉:Red blood cell, RBC, erythrocyte