【简答题】用展成法加工标准直齿圆柱齿轮,其不发生根切的最少齿数为 ,为避免根切的 产生,应将刀具 (远离、靠近)轮坯。
【单选题】Kenya's Tsavo Game Park______Susan of the wildlife park she had visited in New Jersey.
【单选题】Kenya's Tsavo Game Park _______ Susan much of the wildlife park she had visited in New Jersey.
【单选题】Kenya's Tsavo Game Park______Susan much of the wildlife park she had visited in New Jersey.