A.0.8m B.1m C.1.1m D.1.2m
A.應在兩端按規(guī)定設(shè)置連墻件和橫向斜撐加固 B.可采取安全防護措施 C.應按規(guī)定設(shè)置剪刀撐 D.應設(shè)置卸荷措施
A.50mm B.80mm C.100mm D.200mm