单项选择题
A.正常 B.总工期推迟1d C.总工期提前1d D.影响总工期2d
A.30.2m2 B.620.6m2 C.62.06m2 D.302.07m2
A.30%~50% B.30%~40% C.20%~30% D.40%~50%