单项选择题
A.3.2~10tB.3.5~12tC.3.5~13.5tD.3.5~14t
A.砖材B.石材C.块石D.条石
A.1:0.5B.1:0.65C.1:0.75D.1:0.85
A.0.2~0.5mB.0.3~0.5mC.0.3~0.4mD.0.3~0.45m
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