问题
单项选择题
（）千斤顶主要用于改善顶梁的载荷分布情况。
A、测护
B、护帮
C、平衡
D、前梁
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
（）千斤顶主要用于改善顶梁的载荷分布情况。
A、测护
B、护帮
C、平衡
D、前梁
参考答案：C
| 好朋友，手拉手。 |
| ( ) 1. What did you do last weekend ? ( ) 2. How did you go there ? ( ) 3. Where did she go on her holiday ? ( ) 4. When was your last trip ? ( ) 5. Did you have a good trip ? ( ) 6. What did he do ? | A. We went there by train. B. Yes, I had a good trip. C. I rowed a boat. D. On February lst. E. She went to Xinjiang. F. He bought presents. |