问题 单项选择题

HP型中速磨煤机安装时,磨盘轴颈密封处圆周间隙应均匀,且最大不大于()mm。

A、0.05

B、0.10

C、0.15

答案

参考答案:B

材料分析题

某中学为了促进学生积极参与社会公益事业,培养为人民服务的奉献精神,准备开展一次社会公益活动。请你根据下面的提示,尝试完成下列活动设计。

(1)为这次活动设计一个醒目的标语。

                                                                                                                                                              

                                                                                                                                                             

(2)请你围绕这个主题写出几种活动形式。

                                                                                                                                                              

(3)你打算怎样以自己的实际行动奉献社会?

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

填空题