问题
单项选择题
以下描述中除哪一项外均应考虑有绞窄性肠梗阻
A．血性呕吐物或血便
B．有明显腹膜刺激征
C．膨胀突出的孤立肠袢不改变位置
D．腹痛由阵发性发展为持续性
E．扩张肠段呈阶梯性排列
答案
参考答案：E
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以下描述中除哪一项外均应考虑有绞窄性肠梗阻
A．血性呕吐物或血便
B．有明显腹膜刺激征
C．膨胀突出的孤立肠袢不改变位置
D．腹痛由阵发性发展为持续性
E．扩张肠段呈阶梯性排列
参考答案：E
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%.