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房地产开发项目的开发建设应当统筹安排配套基础设施,并根据()的原则实施。
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某荒地面积2km2,取得该荒地的代价为1.8亿元,将其开发成“五通一平”熟地的开发成本及管理费用为2.6亿元,开发期2年,贷款年利率为5%,销售费用、销售税费和开发利润分别为可转让熟地价格的2.5%、6%和10%,可转让熟地面积的比率为荒地的65%,则该荒地开发完成后可转让熟地的平均单价为()。
建筑物重建价格是指采用()的建筑材料、建筑构配件、建筑设备和建筑技术等,在估价时点的国家财税制度和市场价格体系下,重新建造与估价对象建筑物相同的全新建筑物所必需的支出和应获得的利润。
A．事务处理B．工业控制C．矩阵运算D．大量浮点计算
听力原文： The world is not only hungry, but thirsty for water. That may seem strange to you, since nearly 75% of the earth's surface is covered with water. But about 97 % of this huge amount is sea water, or salt water. Man can only drink and use the other 3%-tile fresh water from rivers, lakes, underground, and other sources. And we cannot even use all of that, because some of it is in the form. of icebergs and glaciers. Even worse, some of it has been polluted.
However, this small amount of fresh water is still enough for us. But our need for water is increasing rapidly. Only if we take steps to deal with the problem now can we avoid a severe world-wide water shortage later on.
One of the first steps is to develop ways of reusing it. Today water is used only once and then discharged into a sewer system, and it eventually returns to the sea or runs into underground storage tanks. But it is possible lo pipe used water to a purifying plant. There it can be filleted and treated with chemicals so that it can be used again.
But even if every large city purified and reused its water, we would still not have enough.
All we'd have to do to make use of the sea water in, the world is to remove the salt. If we take these steps we'll be in no danger of drying up!
How much of the earth’s water can man really use？
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