单选题
The passage provides information about each of the following topics EXCEPT
A、
the principal method of geologic remote sensing prior to the mid-1960's
B、
some of the phenomena measured by digital multi- spectral images in remote sensing
C、
some of the practical uses of regional geologic maps
D、
the kinds of problems that are difficult to solve solely through conventional methods of geologic mapping
E、
the specific limitations of the Landsat multi- spectral scanner
【正确答案】
E
【答案解析】
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