题目内容
Using laser technology to print the required marks or labels on the surface of the material belongs to ( ).
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The material used to make the model with the laser is ( ).
The method of improving the surface performance by designing and improving the laser treatment on the surface of the workpiece is ( ).
A laser weapon is a directed energy weapon that uses a directionally launched ( ) to directly damage or invalidate the target.
To promote "Internet plus" action, we must adhere to the principle of openness and sharing, create an open and inclusive development environment, and regard the Internet as an important platform for sharing the elements of production and life, optimize the allocation of resources to the maximum extent, and accelerate the formation of a new model of economic and social operation characterized by ( ).
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