当水泥磨在运行过程中出现“粘球”时应（）
A、减少喂料量
B、减小一仓平均球径
C、增大一仓平均球径
D、加干煤
参考答案：D
用方框中所给单词的适当形式填空。
1. Mom, help _____ (find) my friend Jim, please.
2. This bike isn't mine. It's ______(she).
3. Mike and I are in the same grade, but we are in different ______(class).
4. He ______(have) a round face and short hair.
5. What color _____(be) those pants?
社会交换论认为态度改变的关键是( )。
A．诱因的强度B．回避动机C．趋向动机D．达到平衡状态
