城市地下空间，是指( )。A．城市建筑物地下的空间 B．城市及其郊区地表以下的空间 发布时间：2017-06-02 08:32 │ 来源：www.tikuol.com 题型：单项选择题 问题： 城市地下空间，是指( )。A．城市建筑物地下的空间B．城市及其郊区地表以下的空间C．3层以上建筑物地下的空间D．城市规划区内地表以下的空间
题型：单项选择题 Here is the timetable of science activities in the Children’s Palace. Time table Monday19:00 — 21:30Space and ManDr. Thomas WestWould you like to know more about the outer space?(4 weeks) Tuesday18:30 — 20:30PhotographyMr. Brown from ItalyLearn to take good pictures, please bring your own camera. (5 weeks) Wednesday18:30 — 21:00Computer ScienceProf. Harry Morison from Oxford UniversityLearn how to use Windows 2000. (12 weeks) Thursday 19:00 — 21:00Modern MedicineProf. Lucy greenWould you like to know medical advances? (4 weeks) Saturday14:00 — 17:00Technical EnglishProf. Rose BeetDo you want to learn the technical words and articles? (16 weeks) Sunday8:30 — 11:30Exhibition of Personal InventionsYou can see many inventions by the students; you may also bring your own inventions. (2 weeks)小题1:If you want to learn technical English, you should go to the Children’s palace on ______.A．WednesdayB．ThursdayC．SaturdayD．Sunday小题2: The teacher who teaches photography is from ______.A．EnglandB．ItalyC．AmericaD．China小题3:The computer science class may last for about ________ . A．2 weeksB．4 weeksC．12 weeksD．16 weeks 查看答案
题型：单项选择题 加在某导体两端的电压为4V时，通过它的电流为1A，这个导体电阻为______Ω．若将这个导体两端电压增加8V，导体的电阻为______Ω，通过它的电流为______A．这个导体两端不加电压时，导体的电阻为______Ω． 查看答案
题型：单项选择题 高钛炉渣是一种熔化温度高、流动性区间窄小的“短渣”。液相温度1395℃～1440℃，固相温度1070℃～1075℃，可操作的渣铁温度范围只有（）左右，比冶炼普通矿的小（）。A．50℃，100℃B．100℃，200℃C．90℃，100℃ 查看答案