问题 单项选择题

内燃叉车与蓄电池叉车所用的蓄电池()。

A.原理不相同

B.原理相同

C.都适于长时间持续放电

D.都不能长时间持续放电

答案

参考答案:B

单项选择题

识图题

                         图一                                   图二                                           图三

观察图片,请回答:

(1)图一反映的是什么历史事件?周恩来提出了什么方针推动会议取得了圆满成功?

                                                                                                                                                            

(2)图二反映的事件是在哪一年?中国是如何重返联合国的?

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

(3)图三中访华的外国领导人是谁?他访华前“已经打开了两国人民友好往来的大门”的事件是什么?

    后来,这个国家与中国签署了什么文件?

                                                                                                                                                            

(4)结合以上材料及所学知识,你有何认识?