【简答题】
中小学校教室黑板应设局部照明灯,其维持平均照度不应低于( ),照度均匀度不应低于( )。<br/>A.50lx,0.5<br/>B.100lx,0.6<br/>C.150lx,0.7<br/>D.500lx,0.8<br/>
A、A.50lx,0.5
B.100lx,0.6
C.150lx,0.7
D.500lx,0.8
A、A.50lx,0.5
B.100lx,0.6
C.150lx,0.7
D.500lx,0.8