Mobile Phones are popular all around the world . In r__小题1:_ years there has been a quick rise in the mobile phones . Some people can now no longer imagine ( 想象 ) life w__小题2:__ their mobile phones. However , mobile phone use among children has become a p_小题3:__ for schools now . Some middle schools in China have banned (取缔) students from c__小题4:__ phones during school hours . Some children have received mobile phones as Christmas gifts . Teachers say mobile phone use is a distration（分心）to students during school hours and it also g__小题5: teachers so much trouble in their classroom .Teachers also said that sometimes students might use phone messages (信息) to cheat during exams. She said some schools have t_小题6:_ to ban mobile phones . Some parents felt u__小题7:_ because they couldn’t get in touch with their children. Many students said students shouldn’t have mobile phones when at school but if there was a good reason , they could leave their phones at the school office. They are e__小题8:__ lost and are a distraction from students studies. Many people say that they understand w_小题9: parents would want their children to have phone but they think schools should let students k__小题10:__ when they can use their mobile phones

施工方案中涉及受力结构的计算，必须经过设计单位或施工单位（）验算、签认。

A、局级技术主管

B、项目部技术主管

C、分部技术主管