题型:判断题 No sooner had their latest product been put into market ________ it ________ by other similarcompanies.[ ]A. when; was modeled after B. then; was modeled C. than; was modeled after D. when; was modeled 查看答案
题型:判断题 某城市用地面积600平方公里,全市有公共交通线路通过的街道长度为2100公里,拥有公交营运车辆800辆,公交线路长度为3000公里。统计调查资料显示,该城市公交车的平均营运速度为30公里/小时,居民步行速度为4公里/小时。市政府最近提出:要在公共交通车辆既定的情况下,通过优化线网密度不断提高城市居民的出行方便程度,使城市95%的居民的单程出行时间缩短到40分钟以内。该城市公共交通线网密度为______公里/平方公里。A.3.5B.4.0C.4.3D.4.5E.4.7 查看答案