class invest { public static void main(string[] arguments) { float total = 14000; system.out.println("original investment: $" + total); // inceases by 40 percent the first year total = total + (total * .4f); system.out.println("after one year: $" + total); // loses $1,500 the second year total = total - 1500f; system.out.println("after two years: $" + total); // increases by 12 percent the third year total = total + (total * .12f); system.out.println("after three years: $" + total); }} 20210311
是的。在经济,常用gdp和gni(国收入,gross national income)共同来 衡量或地区的经济发合水平通用的指标。这也是目前各个**和地区常采用的衡量手段。gdp是宏观经济中最受关注的经济统计数字,因为它被认为是衡量国民经济发展情况最重要的一个指标。一般来说,国内生产总值有三种形态,即价值形态、收入形态和产品形态。从价值形态看,它是所有常驻单位在一定时期内生产的全部货物和服务价值与...