【单选题】对常用的又是易制毒的试剂,应:
C.
少量试剂应锁在实验室的专用试剂柜中,并由专人管理,做到双人双锁
【单选题】If the yield on Treasury bills falls from 27% to 22%, then the yield will decrease by ______basis points.
【判断题】《全球通史》是以西欧和北美为中心,总揽全球宏观视野,建立世界史体系。
【简答题】In primary research paper, what's the usual pattern followed by authors?
【判断题】共集电极电路有电压放大作用,也有电流放大作用。
【单选题】The relationship between the AAA-yield and BBB-yield for corporate bonds can best be described as which of the following?
A.
The AAA-yield is always lower than the BBB-yield
B.
The AAA-yield is usually higher than the BBB-yield, but that relationship has changed at times
C.
There is no obvious relationship between the AAA-yield and the BBB-yield
D.
The AAA-yield is always higher than the BBB-yield