在做旋转件的动平衡时，如果每次静止时位置各不相同说明（）。
A.工件有偏重
B.工件情况较复杂
C.工件趋于静平衡
D.工件试验结果有误差
参考答案：C
纯橘瓣式球壳是球罐球壳的一种结构形式，其特点是（）。
A．球壳拼装焊缝较规则
B．制作开片简单省料
C．施工简单
D．简单省料
Brenden Morrow, CFA, is unclear regarding the criteria that must be met regarding preservation of confidential client information. Under which of the following circumstances would Morrow not be required to preserve confidential information received from a client（）
A. CFA Institute has asked for information in reference to an investigation by the Professional Conduct Program.
B. The information would affect the company’s stock price.
C. A relationship of trust has been established.
