The first part includes three sections, one dedicated to the mastery of business vocabulary, the second to grammar and the last to reading comprehension. The second part of WiDaF is dedicated to listening comprehension. 当然，出口到国外以及国内销售，需符合当前国的无线认证！归纳常见的几款无线认证，协助您快速出口销售! En saisissant la signification générale ainsi que les détails lors de... https://getdocumentschina.co/zai_xian_gou_mai_zheng_shu_/widaf