题目内容
我国目前电网的最高交流电压等级是（ ）。
查看答案
搜索结果不匹配？点我反馈
更多问题
输电线路的额定电压为UN=110kV，则它表示的是()。
用于连接220kV和110kV两个电压等级的降压变，其两侧绕组额定电压为（ ）。
Translate the following sentences into Chinese.The main function of the kidneys is to remove waste products and excess water from the blood. The kidney does it with the help of tiny filters present in it. These filters are called nephrons. The cortex and medulla together comprise millions of such nephrons all packed together. The nephron is the structural and functional unit of a kidney.
Translate the following sentences into Chinese.The discovery of antibiotics was one of the greatest medical achievements of the twentieth century. However, overuse of these drugs has led to increased development of antibiotic resistance in bacteria, making it more difficult or even impossible for antibiotics to combat the bacteria. As a consequence, some infections can result in serious illness or even death. In most cases, colds, ear infections, and the flu should not be treated with antibiotics.
微信支付 
支付宝支付