全国公路养护初级_中级_高级工理论模拟试题及答案(国外英文资料).doc

全国公路养护初级_中级_高级工理论模拟试题及答案(国外英文资料) The national highway maintenance primary intermediate high engineering theory, simulation questions and answers A choice. 1. main reasons in the highway longitudinal slope change point vertical curve slope is set (B). A, in order to ease the shock and ensure driving range B, in order to ensure traffic safety C, in order to improve the speed of D, in order to smooth drainage The 2. Storm Snow alert (C). A, B, emergency C, D, a warning Highway 3. component (D) is the main outlet to ground water flow and small drainage structures across the embankment set. A, B, C, subgrade pavement and bridge culvert D 4. preparation of high strength concrete, should be preferred (C). A, B, volcano ash cement slag cement C, fly ash cement and Portland cement D 5. snow pavement spreading snowmelt agent, at (A) spreading. A, pavement freezing 1-2h spreading B, 1-2h spreading pavement before freezing. C, pavement freezing 3-4h spreading D, 3-4h spreading pavement before freezing. 6. in the above 2000m or frozen snow area four highway, the maximum longitudinal slope should not be greater than (C%) A, 3%B, 5%C, 8%D, 10% 7. Subgrade in desert areas, because the relatively dry climate, scarce rainfall, wind, vegetation is sparse, prone to the disease (D). A, subgrade uneven subsidence, B, slope or shoulder was erosion, or the aeolian sand embankment was buried C, D, collapse, mud collapsibility 8. for the prevention and treatment of sandy soil erosion in slope and low humidity (C), can also be used for the comprehensive protection of low grade highway. A, B, plant protection layer paving tile C, D, or tile laminated turf soil protection 9. (A) is the smoothness of pavement maintenance quality evaluation standard. A, DR B, the breakage rate of pavement pavement strength coefficient SSI C, RQI D, riding quality index of lateral force coefficient SFC 10. the greater the ductility of asphalt, asphalt (C). The basic form of the embankment excavation cross section