A.裂縫寬度不大于0.25mm B.裂縫寬度不大于0.2mm C.裂縫寬度不大于0.15mm D.裂縫寬度不大于0.1mm
A.15mm B.20mm C.25mm D.30mm
A.100m,5% B.150m,10% C.200m,15% D.250m,20%