问题
单项选择题
关于技术方案融资前经济效果分析的表述，正确的是()。
A.融资前分析只进行营利能力分析
B.融资前分析从技术方案投资总获利能力的角度，考虑投资的合理性
C.融资前分析以非折现现金流量分析为主
D.融资前分析一般只进行所得税后指标分析
答案
参考答案：B
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关于技术方案融资前经济效果分析的表述，正确的是()。
A.融资前分析只进行营利能力分析
B.融资前分析从技术方案投资总获利能力的角度，考虑投资的合理性
C.融资前分析以非折现现金流量分析为主
D.融资前分析一般只进行所得税后指标分析
参考答案：B
| About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen. The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. This comes in handy for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids. |
The scientists found what the isolated roots need is ______.
A．quite natural
B．sugar, minerals and vitamins
C．some rare vitamins
D．organic nitrogen compounds