液压泵的油温度太高的原因是（）。
A.油的粘度过高
B.电动机转速高
C.冷却不足
D.冷却中断
参考答案：A, C, D
---Will you join us in the game?
---Thank you,_________ .
A．but why not
B．but I’d rather not
C．and I won’t
D．and I’ll join
An analyst gathered the following information about a company’s common stock.
If markets are in equilibrium, the expected constant dividend growth rate is closest to:（）
A. 3.0%.
B. 8.33%.
C. 11.5%.
If markets are in equilibrium, the expected constant dividend growth rate is closest to:（）