题目

小明家小轿车油箱内装有30kg汽油，节假日爸爸带小明驾车到离家路程为400km远的某地旅游，轿车沿高速公路行驶5小时到达目的地．若轿车是匀速行驶且发动机产生的牵引力恒为920N，汽油完全燃烧产生的内能有30%转化为机械能做功，而汽油的热值为4.6×107J/kg．求： （1）小轿车从出发点到达目的地牵引力所做的功为多大？轿车行驶功率为多大？ （2）通过计算说明汽车在行驶途中是否需要加油．根据中文补全句子，并将答案写在相应位置。【1】我不仅听说过那位女艺术家，我还亲自采访过她。Not only ________________ the young woman artist, but I also interviewed her in person.【2】寻找答案，请查阅书的最后一页。Please ________________ the last page of the book for answers.【3】她对自己过去一年所做的一切非常满意。She ________________ what she has done in the past year.【4】虽然计算机有很多优势，但替代不了人。Computers ________________ people though they have many advantages.【5】吉姆将在春节期间来中国，为的是更多地了解中国的传统文化。Jim will come to China during the Spring Festival ________________ Chinese traditional culture.【6】多亏有你们的帮忙，那位受伤的司机被及时送到医院。________________, the injured driver was able to be sent to hospital and treated in time.【7】别在太阳下晒太久，你会被晒伤。________________ for too long. You'll get burnt.