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【简答题】
读我国某城市功能分区规划图，完成下列要求。 （1）该城市的空间形态是_________，这种空间形态的主要优点是________________，主要缺点是__________。 （2）若该城市拟建工业区、科技开发区、商业和住宅区和重点环境整治区等四大功能区， 你认为在图中①②③④（见下面图例）建什么功能区最合理，说出你的理由。 工业区:__________处，理由是____________________； 科技开发区：__________处，理由是____________________； 商业和住宅区：__________处，理由是____________________ 重点环境整治区：__________处，理由是____________________。 （3）为了减轻城市大气污染，有专家建议，在进行③城区改造时，要重点拓宽西北—东南走向的街道，原因。
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举一反三
【单选题】When investigating the rate of reaction of the enzyme lipase on the hydrolysis of triglycerides, the pH must be maintained at an optimum to prevent the lipase denaturing. What is the reason for this?
A.
The addition of water molecules produced by hydrolysis increases pH
B.
The products of hydrolysis decrease the pH
C.
The products of hydrolysis increase the pH
D.
The removal of water molecules used in hydrolysis decreases pH
【简答题】In cells and tissues, __________ and _________ buffer systems maintain intracellular and extracellular fluids at their optimum pH, which is usually close to 7.
【单选题】The optimum pH for trypsin and chymotrypsin is about
A.
1-3.
B.
5-7.
C.
7-9.
D.
10-12.
【简答题】最佳货币区(optimum currency area)
【简答题】最适pH(optimum pH)
【简答题】The economically optimum stand management plan for an owner is that which maximizes the net present value or willingness to pay for bare land just before ______.
【简答题】In cells and tissues, _______ and _________ buffer systems maintain intracellular and extracellular fluids at their optimum (physiological) pH at 7.
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