题目内容
（请给出正确答案）
A. Using remote sensing technique．
B. Controlling the release of carbon dioxide．
C. Making the soil heat resistant．
D. Cutting off the oxygen supply．
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A．He will be charged with a minor driving violation.
B．He will be put in prison for fifteen days.
C．He will be fined a large amount of money.
D．He will not be allowed to drive a bus in the county.
在C0（-∞,∞)上定义范数||f||=sup{If（t)|Il∈（-∞,∞)}.求证:C0（-∞,∞)是Banach空间.
C0(-∞,∞)={fIf(x)}是(-∞,∞)上连续函数,且
在C0(-∞,∞)上定义范数||f||=sup{If(t)|Il∈(-∞,∞)}.求证:C0(-∞,∞)是Banach空间.
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