芳烃装置通过抽提蒸馏从裂解汽油的C6—C8组分中得到苯，甲苯和（_爱下问搜题

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问题填空题

芳烃装置通过抽提蒸馏从裂解汽油的C6—C8组分中得到苯，甲苯和（）产品。

答案

参考答案：混合二甲苯

填空题

用方框中的词补全短文。

Chinese, teacher, by bike, singing, watching TV

Liu Yun is a 1___________. She's tall and thin. She teaches 2___________,
but she likes 3___________. She works in a middle school. She often goes to school
4___________. On the weekend, she likes 5___________.

单项选择题

在“万绿丛中一点红”中，绿草更易被归为一组，这是知觉的（）。

A．整体性

B．选择性

C．理解性

D．恒常性