在打辊转速一定的条件下，随着框栏档距的增大，打叶效率相应变（_爱下问搜题

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问题填空题

在打辊转速一定的条件下，随着框栏档距的增大，打叶效率相应变（）。

答案

参考答案：小

填空题

选词填空。

tea, first, best, is, reached, from, since

     Do you like tea? Tea    1   becoming the most popular drink all over the world. In China, when you
visit someone, the host will bring you a cup of good tea to show welcome. Americans love coffee and
they like   2     , too. Not only Chinese, but also many people around the world like tea.
    The     3   people to drink tea were Chinese. And people in Europe first learned to grow and drink
tea     4   a book in Italy in 1599.Fifty years later, the first ship of tea from China    5     Holland(荷兰).
1.              2.               3.             4.              5.

填空题

依据核酸类药物的结构特点及临床应用情况，可将此类药物分为两类，即（）和（）。