全国公路养护初级_中级_高级工理论模拟试题及答案（The national highway maintenance _ primary intermediate _ senior workers theoretical simulation questions and answers）.doc

全国公路养护初级_中级_高级工理论模拟试题及答案（The national highway maintenance _ primary intermediate _ senior workers theoretical simulation questions and answers） Theoretical simulation test questions and answers of national highway maintenance primary, intermediate and advanced engineering First, multiple-choice questions. 1. the main reason for setting vertical curve at the slope of highway longitudinal slope is (B). A, in order to mitigate the impact and ensure traffic sight distance B, in order to ensure the safety of driving C, in order to improve the speed of driving, D, in order to drain unimpeded 2. blizzard warning for (C). A, pay attention to B, emergency C, warning D, very The 3. highway (D) is a small drainage structure across the embankment mainly for releasing the ground water flow. A, subgrade B, pavement C, bridge D, culvert 4. preparation of high strength concrete should be preferred (C). A, slag cement B, pozzolanic cement C, fly ash cement D, Portland cement 5. snow pavement spreading snowmelt agent, at (A) spreading. After A, the pavement is frozen and 1-2h is spread B and 1-2h spreading before freezing After C, the pavement is frozen and 3-4h is spread D and 3-4h spreading before freezing 6. the maximum longitudinal slope should not be greater than (C)% in the four grade highway above 2000m or snow covered area A, 3%B, 5%C, 8%D, 10% 7. because of the relatively dry climate, less rainfall, large wind blown sand, sparse surface vegetation and easy diseases (D) in the desert area subgrade. A, subgrade uneven settlement B, slope or shoulder by wind erosion, or the entire roadbed was buried by aeolian sand 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, layer protection, B, flat plant C, flat or stacked turf D, soil protection 9. (A) is the evaluation index of pavement roughness maintenance quality standard. A, pavement