2. 外语
  3. A、The surplus generated by low-pressure systems can be sold, lessening overall water strain on a region. B、Low-pressure systems

A、The surplus generated by low-pressure systems can be sold, lessening overall water strain on a region. B、Low-pressure systems

admin2009-05-19  55
问题
选项 A、The surplus generated by low-pressure systems can be sold, lessening overall water strain on a region.
B、Low-pressure systems deliver water directly to root systems, resulting in higher crop yields.
C、A lower cost is associated with low-pressure systems than with high-pressure systems, which are generally more expensive.
D、Lower-pressure systems deliver water in such a way that evaporation rates are diminished, resulting in greater efficiency.
E、Crops watered by lower-pressure systems generally contain higher nutrients, reducing overall food consumption levels.
答案D
解析
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