准备甲、乙水槽2只,分别盛入池塘水和凉开水。将两条活鲫鱼分别放入其中。观察结果:起初两鱼无异,平稳吞水。但不久乙槽中鱼焦燥不安,急促吞水,每分钟达120多次,还不时往水面上冲,最后濒临死亡。而甲槽中鱼仍然如初。为什么会有上述现象出现呢?道理很简单,乙槽中水被烧开 Prepare two A and B sinks, each containing pond water and cold water. Put two live crucians separately. Observations: At first, no difference between the two fish, smooth swallowing. However, shortly afterwards, the fish in the tank B were anxious and anxious to swallow water at a rate of more than 120 times per minute. At times, the fish washed away from the water and finally died. The fish in the tank is still in its infancy. Why do these phenomena appear? The reason is very simple, B tank of water is boiled