题目:
已知某方案NPV小于零,则以下表述中不正确的是()。
A.方案没有达到基准收益率
B.方案实施后的收益率小于零
C.方案的净年值也小于零
D.方案的内部收益率小于基准收益率
答案:
参考答案:B
已知某方案NPV小于零,则以下表述中不正确的是()。
A.方案没有达到基准收益率
B.方案实施后的收益率小于零
C.方案的净年值也小于零
D.方案的内部收益率小于基准收益率
参考答案:B
罗伯特是一运输企业合伙人之一。因生意很兴隆,罗伯特便和妻子在附近又开了一家运输企业,主要由其妻照管。罗伯特经常将客人介绍到自家开的运输企业去,并骗客人说两家是连锁店。依我国《合伙企业法》有关规定,罗伯特是否可以这样做( )
A.可以这样做
B.经全体合伙人同意可以这样做
C.经多数合伙人同意可以这样做
D.不可以这样做
男,21岁,左跟骨肿胀疼痛,结合图像,最可能的诊断是()
A.骨囊肿
B.动脉瘤样骨囊肿
C.骨巨细胞瘤
D.骨样骨瘤
E.骨肉瘤
下列哪些设备需要减震()
A、冷水机组
B、空调机组
C、水泵
D、风机
基于以下病例:患者,男性,22岁,肺结核,大咯血不止,突然出现咯血停止,面色苍白,大汗淋漓、唇、甲发绀、烦躁不安.
最关键的护理措施是()
A、安慰患者,保持情绪稳定
B、保持呼吸道通畅,防止窒息
C、备好急救药品和器材
D、绝对卧床休息
E、暂禁食
Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use. This is especially true in agriculture, where sustainable development is often taken as the sole measure of progress without a proper appreciation of historical and cultural perspectives.
To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so. Medieval agriculture in northern Europe fed, clothed and sheltered a predominantly rural society with a much lower population density than it is today. It had minimal effect on biodiversity, and any pollution it caused was typically localized. In terms of energy use and the nutrients captured in the product it was relatively inefficient.
Contrast this with farming since the start of the industrial revolution. Competition from overseas led farmers to specialize and increase yields. Throughout this period food became cheaper, safer and more reliable. However, these changes have also led to habitat loss.
What’s more, demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050. Yet the growth of cities and industry is reducing the amount of water available for agriculture in many regions.
All this means that agriculture in the 21st century will have to be very different from how it was in the 20th. This will require radical thinking. For example, we need to move away from the idea that traditional practices are inevitably more sustainable than new ones. We also need to abandon the notion that agriculture can be "zero impact". The key will be to abandon the rather simple and static measures of sustainability, which centre on the need to maintain production without increasing damage. Instead we need a more dynamic interpretation, one that looks at the pros and cons of all the various ways land is used. There are many different agricultural performances besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity. It is clear, for example, that the carbon of transporting tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting. But we do not know whether lower carbon footprints will always be better for biodiversity. What is crucial is recognizing that sustainable agriculture is not just about sustainable food production.
What does the author think of traditional farming practices
A. They have remained the same over the centuries.
B. They have not kept pace with population growth.
C. They are not necessarily sustainable.
D. They are environmentally friendly.