问题 单项选择题

对工艺管道外部检查,要()进行一次。

A.1年

B.3年

C.3个月

D.6年

答案

参考答案:C

阅读图文材料,回答问题。

(1)“引领时代”的历史人物是谁?他“引领”一个什么“时代”的到来?试展开合理的想像,简要描

    绘当时社会与以前相比发生了哪些变化。

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

(2)“汽车之父”赞誉的是哪位历史人物?他在交通工具动力方面的发明是什么?从能源领域和材料领

    域两方面比较此次科技革命与上次科技革命的主要区别。

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

多项选择题