According to the fifth parag,aph,what is the suggested method to control underground fires
A. Using remote sensing technique.
B. Controlling the release of carbon dioxide.
C. Making the soil heat resistant.
D. Cutting off the oxygen supply.
A. Using remote sensing technique.
B. Controlling the release of carbon dioxide.
C. Making the soil heat resistant.
D. Cutting off the oxygen supply.
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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