聚乙烯具有结构特点是()A、线型 B、体型 C、支链型 D、交联型 发布时间:2019-09-21 02:52 │ 来源:www.tikuol.com 题型:单项选择题 问题: 聚乙烯具有结构特点是()A、线型B、体型C、支链型D、交联型
题型:单项选择题 给下列句子选择对应的问句或者答语。( ) 1. It's only three o'clock.( ) 2. What time?( ) 3. On the playground?( ) 4. Look at my dress.A. It's very pretty. B. No, in the gym. C. What time is it? D. At four o'clock. 查看答案