全mint42租号网
(2004?黑龙江)右图是一张哈尔滨市的出租车专用发票,由此可知该车运行的时间为______min;车的平均速度
所用的时间t=8:42-8:22=20min;
平均速度V=St=11.3km13h=33.9km/h.
故答案为:20;33.9.
某中学租用两辆小汽车
1.15KM/60km/h=1/4h=15min
再次返回接学生再到考场需要
15min*3=45min >42
他们不能及时到达考场
2.如果再第一次送学生的时候剩下的同学一直步行就可以
在15min学生可步行 5*1/4=5/4km
(15-5/4)/(5+60)=11/52H
剩下时间(15-5/4-5*11/52)/60=11/52H
一共花时间1/4+11/52H +11/52H<42min
所以方案可行。
3.1min=1分钟 1km=1千米 得知:小车距离到达考场的时间是15分钟 人的平均速度是每12分钟走1千米 在小车送前4名人员到达考场需要15分钟 同时人已经走12分钟 也就是走了1千米还剩2分钟 那就是说当小车再次返回去载行走人员就只需要走14千米了=14分钟(因为他们已经走1千米了)小气平均速度是1分钟走1千米 14千米就得走14分钟 减去行走人员剩下的2分钟 就是12分钟还得走12千米还需要12分钟 总结:15+14-2+12=39(分钟)
八年级英语上册3、4单元词组翻译
. Selected 6. Different things 7. Several problems about our school (with a fell) 8. Loan video 9. Go fishing 10. In November 11. In December 12. A bike ride 13. Go to visit the 14. Walking 15. Show someone something (two) 16. Had happy; Stay (two) 17. Send someone something (two) 18. Back to school 19. A good place to go sightseeing 20. Go hiking 21. This weekend 22. Next week 23. On Monday 24. Keep health (three written) 25. In many western countries 26. The traditional Chinese medicine 27. And · · · different 28. And · · · the same 29. The difference (noun) 30 a famous film star 31. Worried about someone 32. More interesting 33. The majority of students 34. Methods; Means 35. Public transportation 36. The most popular public transportation 37. Km 38. Eight kilometers 39. Miles 40. Ten miles 41 min 42. Fifteen minutes and 43. European 44. 45 in Europe. In rural 46. A postcard 47. Go to school on foot (two) 48. The world 49. A small number of students for 50. Take someone to certain place 51. Eat breakfast quickly 52. Riding a bicycle (two) 53. Sports camp 54. Forget to do STH 55. Forget to do STH 56. Spend time with friends 57. 46 58. One hundred and five 59. Sick 60. The station 61. Think 62. Drive 63. How far 64. In other parts of the world 65. The early bus 66. Take the train 67. Leave to certain place 68. Depending on the · · · and decide 69. By boat (two) 70 take the subway (two) 71. Can't wait do STH 72. An exciting holiday 73. Where weather choose? (two) 74. You think of the film? (two) 75. You doing for vacation? I'm going to take care of my little sister 76. How do you arrive at school? I ride a bike to school 77. Spend someone for a period of time doing STH 78. Homework every day I spend two hours. 79. From how far from your home to school? 80. How long
北京哪里出租锚杆钻机
MQS35手持式锚杆钻机相关参数zmjt030
工作压力 .4~0.63MPa
额定压力 0.5MPa
额定转矩 ≥35N.m
额定转速 600r/min
空载转速 ≥1300r/min
最大输出功率 ≥1.6kW
品牌 ZHONGMEI
噪音 ≤90dB(A)
最大负荷转矩 ≥70N.m
耗气量 ≤2.4m3/min
重量 11.5 kg
冲洗水压力(湿式钻孔) 0.6~1.2MPa
最大钻孔直径 Φ≤42mm。