4-digit SITC

4-digit SITC 4 digit number的具体含义 two-digit digit CVV2 10 digit 在SITC分类的基础上,如何将贸易商品进一步分类为资源密集型,劳动密集型,资本密集型和技术密集型4大类? 电子产品在SITC中属第几类? 定义一个函数digit(n,k),要求输入数字n与k,输出数字n上第k位的数.例：digit(15327,4)=5 di The digit 4 has a value of 0.4 in which of the following?A.5 How many 3-digit numbers between 100 and 1000 have a 4 as th How many 4-digit numbers are common multiples of 7 and 11? 2-digit是什么意思