请问 Jobs differ by post,not social standing.其中的by是什么意思,

请问 Jobs differ by post,not social standing.其中的by是什么意思, Jobs differ by post,not social standing.翻译? 请问下PO po po 【insist】THe girl insist that she —— jobs done by menA.doesB.doC.didD.will do请问为什么选a,insist那个虚拟语气怎么回事儿啊, 请问外贸中的PO,PI,CI, 请问外贸中的PO,PI,CI, two numbers add tigether to give 14 and differ by 4中文意思 外贸订货单上的payment :BY/ T/T 还有 PO differ form 服装有po号,请问po号除了订单号还有什么意思? In this respect,French differs____ English填FROM 请问与 differ in 有什么不同.举例说明 1.Two numbers differ by 57.Their sum is 185.Find the numbers.Choices for the smaller number:54 着句话怎么翻译?Whereas If each term of a progression differ from its preceding term by a constant 数学英语翻译 For how many positive intergers n does 根号n differ from 根号10 by less than 解这道英文数学题目find the consecutive number whose cubes（i）differ by 37 (ii)add up to 35 How do perfect competition and monopoly differ in terms of economic efficiency?i need the answer by English