题目内容：
吸声是通过 和 来降低噪声的技术。
参考答案：
选择题：吸声是通过 和 来降低噪声的技术。
- 题目分类：西安交通大学--物理性污染控制工程指南
- 题目类型：选择题
- 查看权限：VIP
The date of the meeting has been ______ from the 5
The date of the meeting has been ______ from the 5th to 8th of June.A. postponed
The ship.s generator broke down, and the pumps had
The ship.s generator broke down, and the pumps had to be operated instead of
下面()是化石能源。
下面()是化石能源。
组成计算机指令的两部分是______A.数据和字符B.操作码和地址码C.运算符和运算数D.运算符和运
组成计算机指令的两部分是______A.数据和字符B.操作码和地址码C.运算符和运算数D.运算符和运算结果
常见的隔声设施有
常见的隔声设施有