凹凸印
参考答案：
用凹凸两块印版，把印刷品压印出浮雕状图像的加工。
简述无机结合料的击实试验目的和适用范围。
You ___ go to the shop.There are quite a few eggs in the fridge.
A．don’t have to
B．have to
C．needn’t to
D．don;t need
