(一)大量饮水引起的水利尿现象实验用具:水杯、量筒、收集尿液用的大烧杯或量筒、白开水1000毫升。实验步骤: 1.可选3～5人一起进行实验,实验前两小时内不吃饭不饮水,实验开始前尽量将尿排净。 2.每人一次饮用白开水1000毫升,开始记时。饮水后3小时内,每隔半小时排尿一次,排入大烧杯中,记录数量(如果半小时内排尿不止一次,可将半小时内的尿液收集在一起计数)。 (A) a large number of drinking water caused by water Urine test utensils: cups, measuring cylinder, collecting large beakers or measuring cylinder with urine, boiled water 1000 ml. Experimental steps: 1. Optional 3 to 5 people to experiment together, two hours before the experiment does not eat without drinking water before the experiment as much as possible to clean the urine net. 2. Once per person to drink 1000 ml of boiled water, began to record time. Urine within half an hour after drinking, once every half an hour urination, into the large beaker, record the number of (within half an hour if urination more than once urine can be collected within half an hour count).