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單項(xiàng)選擇題

網(wǎng)絡(luò)應(yīng)控制在（）cm左右。

A.5-6
B.6-8
C.8-10
D.10-15

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單項(xiàng)選擇題

掘苗時(shí)溝槽寬度應(yīng)（）cm。

A.30-40
B.50-60
C.50-80
D.80-100

單項(xiàng)選擇題

掘苗順序依次為（）。

A.去表土；挖球；掏底；包扎
B.去表土；挖球；打腰鼓；掏底；包扎
C.去表土；挖球；修平；包扎
D.挖球；修平；掏底；包扎

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