单项选择题
A.≤0.13mg/m3 B.≤0.12mg/m3 C.≤0.11mg/m3 D.≤0.10mg/m3
A.≤1.0 B.≤1.1 C.≤1.2 D.≤1.3
A.≤0.8 B.≤0.9 C.≤1.0 D.≤1.1