一棵二叉树的中序遍历结果为DBEAFC，前序遍历结果为ABDECF，则后_爱下问搜题

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问题填空题

一棵二叉树的中序遍历结果为DBEAFC，前序遍历结果为ABDECF，则后序遍历结果为______。

答案

参考答案：DEBFCA

多项选择题

以下属于相关指标比率分析法的有( )。

A．产值成本率

B．成本利润率

C．制造费用比率

D．营业收入成本率

完形填空

A group of graduates got together to visit their old university professor.
The conversation soon turned into complaints about   1  in work and life. Offering his   2  coffee, the professor went to the kitchen and   3  with a large pot of coffee and a   4  of cups — porcelain, plastic, glass, crystal, some plain-looking, some expensive, some beautiful — telling them to   5  themselves to the coffee.
When all the students had a cup of coffee in hand, the professor said, “If you have   6 , all the nice-looking expensive cups have been   7 , leaving behind the plain and   8  ones. While it is normal for you to want only the best for yourselves, that is the   9  of your problems and stress.”
“Be assured that the cup   10  adds no quality to the coffee.   11  it is just more expensive and in some cases   12  hides what we drink.”
“ 13  all of you really want is coffee, not the cup,   14  you consciously went for the best cups… And then you began   15  each other’s cups.”
“Now consider this:   16  is the coffee; the jobs, money and position in society are the cups.   17  are just tools to hold and contain life, and the type of cup we have does not define, nor change the   18  of life we live. Sometimes, by concentrating only on the cup, we   19  to enjoy the coffee. Value the coffee, not the cups! Don't let the cups   20  you… enjoy the coffee instead.”

D．In most cases