使用盘形铣刀代替端铣刀铣键槽,可以有效地降低键槽的应力集中,提高轴的疲劳强度。
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轴肩与滚动轴承配合处,应使轴肩高度高于轴承内圈厚度。
A. 对
B. 错
Gia, who lives in Columbus, Ohio, is the proud owner of a nine-week-old dog called Rye.
A. 对
B. 错
Gia’s employer announced a new employee perk earlier this year that nobody who adopts a puppy or rescue dog can get one week’s paid leave.
A. 对
B. 错
Newspaper reports give positive feedback to the scheme that Brewdog has dubbed “pawternity” leave.
A. 对
B. 错