- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
栽植穴應(yīng)根據(jù)根系或土球的直徑加大（）.
A.40cm-80cm
B.50cm-80cm
C.60cm-80cm
D.70cm-80cm
