问题
问答题 计算题
已知某挖掘机一块配重铁体积是0.068M3，配重铁密度为P＝7.3g/cm3，挖掘机配重是65吨，求需要多少块配重铁？
答案
参考答案：
依据公式可知：M＝P×V=7.3×0.068=0.496吨
65/0.496=131块
需要131块配重铁
搜题请搜索小程序“爱下问搜题”
已知某挖掘机一块配重铁体积是0.068M3，配重铁密度为P＝7.3g/cm3，挖掘机配重是65吨，求需要多少块配重铁？
参考答案：
依据公式可知：M＝P×V=7.3×0.068=0.496吨
65/0.496=131块
需要131块配重铁
阅读理解。
two children, Henry and Helen. Henry is a pupil (小学生). He is interested in (对……感兴趣) playing football, and he is good at (擅长) playing the violin. Helen cannot walk. She is too young. She is not a pupil. They are from America. | |
| 1. How many children does Mr Green have? | |
[ ] | |
| A. Two. B. Three. C. Four. | |
| 2. What can you call Mr Green's wife? | |
[ ] | |
| A. Miss Green. B. Mrs Green. C. Mrs White. | |
| 3. Mr Green's daughter's name is ______________. | |
[ ] | |
| A. Green Helen B. Helen Green C. helen green | |
| 4. Is Henry a pupil? | |
[ ] | |
| A. Yes, he is. B. Yes, she is. C. No, she isn't. |
