某候车室内采集空气中微生物,采样点距离地面高度( ),距离墙壁不小于( )。( )
A.0.8-1m,0.5m
B.0.8-1m,1m
C.1.2-1.5m,0.5m
D.1.2-1.5m,1m
正确答案是D