(1) Because the air pressure decreases with the increase of height, Xiaoli lives in 2 1 building. If she takes this device downstairs by elevator, the atmospheric pressure outside the bottle increases, which makes the liquid level inside the bottle rise.

I don't agree with Xiao Li because the gas in the bottle is under pressure. At this time, the atmospheric pressure should be equal to the liquid pressure formed by the water column in the bottle plus the pressure generated by the gas in the bottle.

So the answer is: (1) rise; ? (2) Disagree; The gas in the bottle has pressure.