单项选择题
A.1-3% B.0.1-0.3% C.0.3-1% D.3-10%
A.花街铺地 B.卵石路 C.石子画 D.冰裂纹铺地
A.1~4% B.0.1~0.4% C.10~40% D.0.3~8%
A.0.3%~0.8% B.3~8% C.30%~80% D.4~12%
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