【简答题】为了使交流发电机输出恒定的直流电压,充电系统中必须加装电压调节器,电压调节器可分为机械和()两种类型,但现代汽车,利用微电脑直接控制发电机输出电压,因而调节器被取消。
【多选题】下列关于痛风病人的膳食防治正确的是
B.
痛风病人应选择低脂肪、低蛋白质的饮食饮食,每日脂肪摄入量应占总能量的20-25%
【单选题】Perhaps the greatest change the world has seen in modern times has been the rise of the Internet.
【简答题】perhaps the greatest change the world has seen in modern times has been the rise of the internet.