- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
礦車車箱裂紋長(zhǎng)度不得大于（）。
A.50mm
B.100mm
C.150mm
D.125mm
A.50mm
B.100mm
C.150mm
D.125mm
