文档介绍：several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measuremen间需要〔       〕。   
  A、30分钟以内               B、45分钟左右    
C、60分钟左右               D、90分钟以上  
4．在学****数学的过程中，遇到困难时你会〔       〕。  
   A、向老师和同学请教           B、回家问家长   
C、看书、动脑，自己解决      D、摆在一边，以后再说  
5．平时你与他人交流数学学****问题的情况是〔       〕。  
   A、经常交流             B、偶尔交流      C、不交流    
 6．在学****数学的过程中，你〔      〕成功的感受。  
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertica