- 搜標(biāo)題
- 搜題干
- 搜選項
單項選擇題
V型皮帶憑經(jīng)驗安裝，帶的張緊程度為（）以上。
A.1~5mm
B.5~10mm
C.10~15mm
D.15~20mm
A.1~5mm
B.5~10mm
C.10~15mm
D.15~20mm
