Just as truly as eternal vigilance is the price of liberty, so is eternal industry the price of noble and enduring success.
查看答案
When you first meet someone, what you should say?
A. Hello, this is...
B. Sorry, it is my fault.
C. Time to go.
If you meet someone that you should met before, you should say...?
A. Forget it.
B. I have met you before.
C. It is really a big day.
If you meet someone that you think met before, what you should say?
A. Forget it.
B. I think we have met before.
C. It is really a big day.
在单向拉伸、扭转与单向压缩实验中，应力状态软性系数的变化规律是（ ）
A. 单向拉伸>扭转>单向压缩
B. 单向拉伸>单向压缩>扭转
C. 单向压缩>扭转>单向拉伸
D. 扭转>单向拉伸>单向压缩
微信支付 
支付宝支付