影响PVC树脂颗粒形态和粒度分布的因素主要是（）和（）。
参考答案：悬浮剂种类；机械搅拌
—I want to see the film. Would you like to go with me?
—____ [ ]
A. Certainly, I like to.
B. You bet. I'd like to.
C. You bet, I would.
D. No, I'd like to.
下列为窗口事件的是______。
A．MouseEvent B．WindowEventC．ActionEvent D．KeyEvent
