【单选题】下列( )状态应按正常使用极限状态验算。
【单选题】186 An acceptance control chart has limits that are based on the spec. limits for the product rather than limits which differentiate between random and assignable causes. Under which of the following ...
B.
When the engineering tolerance on a dimension greatly exceeds the natural dispersion of the manufacturing process B. When the number of samples outside the current control chart limits become too costly and cumbersome to investigate.
C.
When a process is subject to constant but stable tool wear.
【简答题】简述“机械设计基础”课程的主要研究对象和内容。
【简答题】传统的机械设计与机械可靠性设计,都是以零件或机械系统的 作为其主要研究内容。
【单选题】下列( )状态应按正常使用极限状态验算。
【多选题】在风景名胜区内禁止进行( )活动。
C.
修建储存爆炸性、易燃性、放射性、毒害性、腐蚀性物品的