1、做连通器将输液器两端针剪去,把输液器浸入红水中,挤压吸进水,提起两端,红水在输液器内,两端水位相平,改变两端高度,红水在输液器内上升、下降,最终两端水位总保持相平。2、液体热胀冷缩实验将输液器内吸进红水,关闭调节器。(如图)把输液器的塑料瓶用热毛巾焐住(或放入热水 1, do the connecter cut the needle on both ends of the infusion set, the infusion set immersed in the red water, squeeze suction into the water, lift both ends of the red water in the infusion set, both ends of the water level, change the height of both ends, red The water rises and falls within the infusion set, and eventually the water level at both ends remains flat. 2, the liquid thermal expansion and contraction experiment Suction into the infusion device into the red water, turn off the regulator. (Picture) Place the infusion bottle plastic bottle in a hot towel (or add hot water