代理人：针对不同的用途，其保险的险种也是不一样的。
水泥混凝土作为一大类建筑材料，有着广泛的用途，针对不同的用途，国家标准中有详细规范要求。
Cement concrete as a large class of building materials has a wide range of using for different purposes, and the national standard has detail specifications.
一旦机器启动，BIOS就有了不同的用途，显示具有针对电脑硬件的标准应用程序编程接口的DOS系统。
Once the machine has booted, BIOS will have a different use, appears to have a standard for computer hardware application programming interface of the DOS system.
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