两根阻值分别为R1=60Ω和R2=90Ω的电热丝,将它们串联后接在家庭电路上,经

题型:填空题

问题:

两根阻值分别为R1=60Ω和R2=90Ω的电热丝,将它们串联后接在家庭电路上,经过25min产生热量Q.如果将这两根电热丝改为并联,仍接在家庭电路上,两电热丝并联后的总电阻R=______Ω,经过______min可产生同样的热量Q.

考点:电阻的并联电阻的串联电功或电能的计算
题型:填空题

张某为自己的车投保了第三者责任险。某日,张某开车带朋友丁某去外地,车上装有丁某的家具。途中与另一辆汽车相撞,丁某受伤,家具受损。则()。

A.丁某属于第三人,保险公司应对丁某的伤害进行赔偿

B.丁某家具的损失,应由保险公司赔偿

C.丁某因伤所受损失及家具损失应由张某和保险公司各承担一半

D.对丁某及其家具的损失,保险人都不予赔付

题型:填空题

Taiwan is a part of China, and it's _____ the southeast of our country. [ ]

A. to    

B. on      

C. in    

D. at

题型:填空题

       材料一:在所有制方面搞“一大二公”,即规模大,公有化程度高,生产队和社员的部分财产无偿收归集体所有,社员的自留地收归集体经营,关闭集体贸易市场,消灭私有制残余。在分配上搞“一平二调”,即贫富拉平,平均分配物资,无偿调拨生产队的生产资料和劳动力,公共食堂吃饭不要钱。

       材料二:“大包干,大包干,直来直去不转弯,保证国家的,留足集体的,剩下都是自己的。”

请回答:

(1)材料一和材料二实行的政策各是什么?

                                                                                                                                                           

(2)材料一和材料二的结果各是什么?造成的此结果的原因,你认为各有哪些?

                                                                                                                                                           

                                                                                                                                                           

                                                                                                                                                           

                                                                                                                                                           

(3)由材料一和材料二的结果,给我们的启示是什么?

                                                                                                                                                           

(4)大包干实行后,国家、集体、个人利益三者关系是什么?

                                                                                                                                                           

(5)大包干与农业合作化前的个体经济有什么异同?

                                                                                                                                                           

                                                                                                                                                           

(6)新中国成立以来,我国农村生产关系的几次调整史实。

                                                                                                                                                            

题型:填空题

免税单位与纳税单位合并办公,所用车辆不能划分清楚,则免税单位车辆也应照章纳税。( )

题型:填空题

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