吉大《土木工程材料》在线作业二（Kyrgyzstan civil engineering materials online homework two）.docVIP

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吉大《土木工程材料》在线作业二（Kyrgyzstan civil engineering materials online homework two）.doc

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吉大《土木工程材料》在线作业二（Kyrgyzstan civil engineering materials online homework two）

吉大《土木工程材料》在线作业二（Kyrgyzstan civil engineering materials online homework two） 13 spring civil engineering materials, online homework 21 13 autumn papers total score: 100 test time: - Radio examination A multiple-choice question Judgment question Radio examination questions (10 questions, 40 points) 1. plastic products affected by external conditions, performance gradually deteriorated, the quality of the decline process known as. A. wear B. aging C. degradation D. corrosion Full marks: 4 2., the main feature of the plaster of Paris when it comes to setting and hardening is (). A. has a large volume expansion B. has large volume shrinkage C. exothermic mass D. setting and hardening fast Full marks: 4 3. the following grades of low alloy high strength structural steel indicate correct (). A. Q345F B. Q345A C. Q295C D. Q390F Full marks: 4 The carbon content of 4. steel should be less than (). A. 1% B. 1.5% C. 2% D. 2.5% Full marks: 4 5.. The nature of the material which is subjected to multiple freeze-thaw cycles in the water saturated state without damage is called (). A. weather resistance B. impermeability C. freeze tolerance D. frost resistance Full marks: 4 6., for the preparation of high strength concrete, should choose the following () additive. A. early strength agent B. water reducing agent C. retarder D. accelerator Full marks: 4 7., the key step of sintering common brick is (). A. billet B. roasting C. batching modulation D. drying Full marks: 4 The 8. asphalt (with) said. A. solubility B. ductility C. penetration D. softening point Full marks: 4 9. in the wet sand of 100g moisture content of 3%, the quality of water is (). A. 3.0g B. 2.5G C. 3.3g D. 2.9g Full marks: 4 10. the strength of cement is divided according to the specified age. A. compressive strength B. flexural strength C. compressive strength and flexural strength D. compressive strength and tensile strength Full marks: 4 13 spring civil engineering materials, online homework 21 13 autumn papers t