单项选择题
A.26tB.28tC.30tD.32t
A.12508×3025×3900mmB.13508×3025×3800mmC.13508×3125×3900mmD.13508×3025×3900mm
A.不超过2根B.逐孔倒筛夯实C.不超过3根D.不超过4根