问题
单项选择题
通过采用集料表干质量计算得到的密度是（）。
A.表观密度
B.毛体积密度
C.真密度
D.堆积密度
答案
参考答案：B
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通过采用集料表干质量计算得到的密度是（）。
A.表观密度
B.毛体积密度
C.真密度
D.堆积密度
参考答案：B
An analyst does research about a sensitivity analysis to determine about a potential real estate investment and gathers the following information:
| Discounted Rate | Present Value of After-tax Cash Flows |
| 21% | $144712 |
| 25% | $124343 |
| 31% | -$107747 |
| 33% | -$121350 |
A. 21% but less than 25%.
B. 25% but less than 31%.
C. 31% but less than 33%.