离心泵的机械密封泄漏应不超过轻质油()滴/min,重质油()滴/min的要求,填料密封应不超过轻质油()滴/min,重质油()滴/min的要求。
参考答案:10;5;20;10
精确配制250mL一定物质的量浓度的NaOH 溶液,下克实验操作正确的是( )
A.选择仪器时,使用500mL容量瓶
B.将称量好的氢氧化钠固体放入容量瓶中,加入少量水溶解
C.在烧杯中溶解氢氧化钠固体后,立即将所得溶液注入容量瓶中
D.将烧杯中的氢氧化钠溶液注入未经干燥的洁净容量瓶中
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.