班级授课组织的形式有()
A.全班上课
B.班内分组上课
C.班内个别上课
D.一对一上课
参考答案:A, B, C
For an analyst evaluating the common stock of a financial institution that reported a small loss for the year just ended, the price multiple that is least likely to be meaningful is:()
A. price to cash flow.
B. leading price to earnings.
C. trailing price to earnings.
探究燃烧条件的实验装置如图所示。
(1)由该实验得,可燃物燃烧的条件是:
① _____________;②_____________。
(2)实验中发生反应的化学方程式为________________。