On what does the operation of an aneroid barometer depend?（）<br>A:Thin，metal，air tight cell<br>B:Curved tube containing alcohol<br>C:Column of mercury supported by atmospheric pressure<br>D:Expansion of mercury in a closed tube

On what does the operation of an aneroid barometer depend?（）
A:Thin，metal，air tight cell
B:Curved tube containing alcohol
C:Column of mercury supported by atmospheric pressure
D:Expansion of mercury in a closed tube

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