An instrument designed to maintain a continuous record of atmospheric pressure is a(n)（）.<br>A:mercurial barometer<br>B:aneroid barometer<br>C:barograph<br>D:thermograph

An instrument designed to maintain a continuous record of atmospheric pressure is a(n)（）.
A:mercurial barometer
B:aneroid barometer
C:barograph
D:thermograph

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