单选题For a purifier, changing to a gravity disc with larger hole diameter will move the interface towards the （）.Abowl peripheryBbowl centerCupper surfaceDlower surface
单选题
For a purifier, changing to a gravity disc with larger hole diameter will move the interface towards the （）.
A
bowl periphery
B
bowl center
C
upper surface
D
lower surface
参考解析
解析：
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