大工14秋《土木工程概论》在线测试3（Great works, 14 autumn, introduction to civil engineering, online test 3）.doc

大工14秋《土木工程概论》在线测试3（Great works, 14 autumn, introduction to civil engineering, online test 3） Great works, 14 autumn, introduction to civil engineering, online test 3 Multiple-choice questions, multiple-choice questions, judgment questions First, radio questions (10 questions, 40 points) 1. the following earth materials shall never be used as fill materials for earthwork filling. A. crushed stone soil B. frozen soil C. sand D. cohesive soil Developing options: B 2., reinforced concrete precast pile should be in the concrete to reach the design strength level (%) before lifting. A. 60 B. 70 C. 80 D. 90 Developing options: B 3. in the following discussion of cast-in-place structural engineering, the mistake is (). A. reinforced concrete members shall be provided with a protective layer of a certain thickness The concrete strength of the B. cast in place formwork and its support shall comply with the design requirements C. templates should be removed in a certain order D. the cement containing sulfide shall be strictly prohibited for prestressed concrete members Developing options: D 4. the following options do not belong to the concrete curing method. A. natural conservation B. standard curing C. heat curing D. cold curing Developing options: D 5. the method of vibration compaction is applicable to loose clay and sand soil with clay content and permeability. A. less, good B. less, difference C. much, good D. is much worse Developing options: A Minutes of each meeting of the 6. project (). A. may not be used as evidence for claims B. may serve as evidence for claims C. can only serve as a reference to the claim D. may not be used as a reference for claims Developing options: B 7. what is wrong in the discussion about collapsible loess here is (). A. has large pore structure B. is mainly sandy soil C. natural moisture content approaches plastic limit D. contains a large amount of soluble salts Developing options: B 8. the permeability of soil is expressed by (). A. penet