如何更换胶圈?
参考答案:
起升、变幅、行走机构的胶圈通过拆卸靠臂销子来更换即可。旋转胶圈更换时,必须吊起旋转电机,再依次更换胶圈。吊落旋转电机时要注意安全,防止挤伤手指。
根据句意和首字母完成下列句子。
1. Sorry, I can't u _____ you.
2. He has t_____ me a lot about you.
3. I have a friend who s_____ English.
4. Yesterday my cousin p_____ me.
5. Please repeat. I can't f_____ you.
6. My grandma t_____ me a good story last night.
7. He often e_____ me to do everything.
8. May I s_____ to Jenny?
9. Pardon? Please speak more s_____.
10. I w_____ love to talk with her.
经营利润的变动对销售变动反映程度的衡量指标是()
A、财务杠杆系数
B、流动比率
C、速动比率
D、经营杠杆系数