旅馆客房与客房之间隔墙空气隔声标准(计权隔声量dB),下列何种正确() A.特级≧5
题型:单项选择题
问题:
旅馆客房与客房之间隔墙空气隔声标准(计权隔声量dB),下列何种正确()
A.特级≧50,一级≧45,二级≧40,三级≧35
B.特级≧50,一级≧45,二级≧40,三级≧40
C.特级≧50,一级≧50,二级≧45,三级≧40
D.特级≧45,一级≧45,二级≧40,三级≧40
旅馆客房与客房之间隔墙空气隔声标准(计权隔声量dB),下列何种正确()
A.特级≧50,一级≧45,二级≧40,三级≧35
B.特级≧50,一级≧45,二级≧40,三级≧40
C.特级≧50,一级≧50,二级≧45,三级≧40
D.特级≧45,一级≧45,二级≧40,三级≧40