( )是指商品进口国制定的技术法规、标准以及合格评定程度对进口商品构成贸易障碍。A 发布时间:2017-12-31 12:30 │ 来源:www.tikuol.com 题型:单项选择题 问题: ( )是指商品进口国制定的技术法规、标准以及合格评定程度对进口商品构成贸易障碍。A.检验检疫措施壁垒B.技术性贸易壁垒C.通关环节壁垒D.绿色贸易壁垒
题型:单项选择题 Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.In a distance learning course, oneA.does not have to see the professors.B.also needs to take exams.C.reduces the learning expenses.D.must revise the schedule to attend the course. 查看答案