单层采样器的特点是从()水到深层水都可以由样品瓶直接在水体中采样。
A、表层
B、1/3水深
C、1/2水深
D、2/3水深
参考答案:A
Which of the following steps is NOT used in the full valuation approach in measuring interest rate risk()
A. Estimate hypothetical changes in required yields.
B. Calculate the bond’s convexity.
C. Recompute bond prices using the new required yields.
任务绩效与周边绩效的一个主要区别是它们关注于完成任务本身还是人际互动。