道路垫层材料有粒料稳定土和()两类。A、无机结合料稳定土 B、_爱下问搜题

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问题单项选择题

道路垫层材料有粒料稳定土和()两类。

A、无机结合料稳定土

B、水泥稳定土

C、级配碎石

D、沥青混凝土

答案

参考答案：A

阅读理解

以下是某校的部分校规。请根据内容按四个不同场所归类，并将其序号填入下面相应的横线处。每一横线只填一个序号。

1. You must not draw on the blackboard.
2. You must return the books in time.
3. You must not step on the grass.
4. You must put back the books after you have read them.
5. You must not talk to the driver when the bus is moving.
6. You must clean the classroom every day.
7. You must put away the balls after you have used them.
8. You must not cut in line when you wait in line for the bus.

Classroom
___ ___

Library
___ ___

School bus
____ ____

Playground
___ ___

请你仿照以上校规，用英文为自己的学校制定一条合理的校规。

E ___________________________________________________________________

问答题简答题

说出几种采用新工作原理的超精密研磨与抛光技术的名称。