实务单选（Practice radio）

1、实务单选（Practice radio）1. in the flexural member, sometimes the longitudinal bar is bent at the support to form a bent reinforcing bar, whose main function is (B).A. Bending, B., shear, C., torsion, D., earthquake resistance2. in order to ensure the steel and concrete bonding and casting density, norma

2、l indoor environment and the upper beam bottom reinforcement spacing should be not less than (A mm).A.25, 30 B.30, 25 C.25, 35 D.35, 253., under the combined action of axial pressure and shear force, the compressive strength of concrete is higher than that of its axial compressive strength (B).A. In

3、crease B. decreaseC. increases with the increase of shear stress, but the shear stress is too large, while the compressive strength decreases, and the D. is indeterminate4. which of the following is the basis for calculating the strength of a steel bar with apparent flow amplitude (A)?.A. yield stre

4、ngth; B. ratio limit; C. limit strength; D. condition; yield strength5., a five span continuous beam to withstand uniform live load, the calculation of second bearings at the maximum negative bending moment, the living load should be how to layout? (C).A. cloth at first, 2 span, B. cloth, in first,

5、2, 3 spanC. cloth at first, 2., and 4 spans D. cloth at first, 3, and 5 spans6. a cast-in-place slab round cover has a size of 300 x 500 (unit: mm) of the hole, then the hole edge should take what kind of measures of strengthening? (C)A. does not need to handle the B. plate, the steel bar bypasses t

6、he entrance hole, C. sets the stiffener, the D. adds the secondary beamThe main reason for the compression of steel bars in 7. beams is (C).A. assist concrete compression, reduce cost, B. assist concrete compression, raise costC. section internal force is big, section size is limited, D. improves se

7、ction ductilityCracking load on members of 8. beams with steel bars (B).A. had a significant effect on B., with little effect on C. and no effect on D., depending on the specific situation9. eccentrically loaded columns are designed to be symmetrically reinforced for (A).A. convenient construction,

8、B. reduce cost, C. save calculation workload, more than D. three10. which of the following factors have no effect on the compressive strength of masonry (D)?.A. bulk strength, B. mortar strength, C., ash joint plumpness, D. temperatureThe main function of 11. sand piles to reinforce foundation is (B

9、).A. drainage consolidation, B. compaction soil, C. replacement soil layer D., change the soil density12. the compression of soil is mainly the deformation of (C).A. solid particles, B. soil water, C. soil pores, D. gas in soil13. friction type high-strength bolt depends on (D) bearing when shearing

10、.Shearing resistance of A. bolt, prestressed B. bolt rod, C. hole wall pressure, friction between D. plates14., the more serious the stress concentration is, the steel (C).The larger the A. deformation is, the lower the B. strength is, and the higher the C. elasticity is, the more brittle the D. bec

11、omes15., the foundation soil buoyancy is soil (C).A. bound water, B. free water, C. water below the water table, D. capillary water16. the sensitivity of soil can be measured by (A) experiment.A. unconfined compression B. side compression C. cross plate shear D. field loading17. in high-rise buildin

12、gs, the overall bending deformation characteristics are (A).The interlayer deformation of A. is larger, lower and smaller, and the deformation between B. layers is smaller and larger. The deformation between C. layers is the same as that of D.18. 150m tall buildings,With natural foundation, the foun

13、dation depth should not be less than the value (B)A.10mB.15mC.20mD.18m19. when calculating the excavation volume of earth and stone, it refers to the earth and stone (A).A. natural state, volume B., loose state, volume C., compacted state, volume D., dry state volume20. which of the following method

14、s can be used to cure rubber soil? (B).A. dynamic compaction, B. doped slag and dry soil, C. soil, adding water, D. rolling21. the diameter of manually dug piles is generally the least, not less than (C).A.600 mm B. 700 mm C. 800 mm D. 1000 mm22. at room temperature, cement mortar should be used in

15、mixing (B) hours.A,.2, B,.3, C,.4, D. 523., we often call one step high means each time the erection scaffold height is (C) or so.A.1mB. 1.1mC. 1.2mD. 1.5m24. the feeding order of mixing concrete with a single feeding method is (B).A. sand, stone, water, cement, B. sand, cement, stone, waterC. water

16、, sand to stone, cement to D., cement to sand, stone to water25., single storey industrial building reinforced concrete roof truss in the field prefabricated, in order to facilitate the righting position, which of the following should be adopted in the plane layout? (A).A. positive oblique layout, B

17、. oblique layout, C. oblique and oblique layout, D. forward layout of the forward axis26. in the toilet waterproof construction, generally do water storage experiment, water storage height and storage time, the correct is (A).A. 50 100 mm, 24 48 hours B. 20 30 mm, 24 48 hoursC. 50 100 mm, 12 24 hour

18、s D. 20 30 mm, 12 24 hours27., on the ground floor of large tiles, the general needs to play ten word line, its role is (D).A. guarantee flatness B., easy to puzzle C., easy to find slope, D. guarantee horizontal vertical28. the mortar plumpness of brick wall is generally checked by grid, and its va

19、lue is not less than (C).A.70%B.75%C. 80%D.90%29., winter construction for cement mark high, cement calorific value, outdoor minimum temperature is higher than -15 degrees, which of the following is the preferred method? (A)A. heat storage method, B. early strength cement method, C. admixture, D. ex

20、ternal heating method30. the overall thickness of the interior walls of high-grade plastering shall be controlled (D).A. is less than or equal to 18 mm B. 20 mm C. 15 mm less than or equal to D. less than or equal to 25 mm1. which one of the following statements is not true about the less stressed b

21、eam: (B)A. bearing capacity is low, B. compression zone height is smallC. crack at one break is brittle fracture, and the compressive strength of D. concrete is fully utilized2. the longitudinal reinforcement ratio of flexural members is defined as: (D)A. B.C. D.3., when the height of the abdomen, t

22、he two sides of the beam should be set in the waist, the spacing should not be greater than: (A)A.200mm B.200 to 300mmC.300mm D.300 to 400mm4. which section of the following statement is not correct for oblique section of flexural members: (B)A. tensile failure is brittle failure B.Shear failure is

23、ductile failureC. baroclinic failure is brittle fracture, and the failure forms of D. oblique section are brittle5. Where are the initial cracks in the pure torsion members of rectangular cross section: (A)A. the midpoint of a long edge, B., the edge of an intersectionThe midpoint D. of a short edge

24、 of C. whose position is random6. the ultimate bearing capacity of reinforced concrete members under axial compression does not depend on: (C)A. concrete strength, number and strength of B. reinforcementSection shape of C. member, slenderness ratio of D. member7. which of the following conditions is

25、 inappropriate for the description of large eccentric compression members: (D)A. away from the force, one side of the steel reinforcement to the yield, B. close to the side of the steel pressure, to yieldC. close to the side of the concrete compression crushing D., far from the force side of steel,

26、no matter tension and pressure are not yield8. cast-in-place one-way ribbed slab structure, beam span economy generally: (C)A.1.5 to 2.5m B.2 to 4mC.4 to 6m D.6 to 8M9. determine the effective length of support at the end of the beam, irrespective of which factor: (C)A. the actual supporting length

27、of the supported beam B. is the height of the supporting beamC. the width of the supported beam; the compressive strength design value of D. masonry10. what is wrong about the wall to column ratio of height to thickness: (D)The stability of A. wall is reduced after openingB. mortar has high strength

28、 grade and good wall stabilityThe stability of C. non load bearing wall is higher than that of bearing wallThe stability of D. wall column wall must be higher than that of rectangular section wall11., common bolts for the need to disassemble the connection, should choose: (C);A. class a bolts, class

29、 B., class B boltsC., C class bolts, class D., class D boltsIn the 12. column, in which case is the length of the weld calculated correctly: (B)A. the actual length of the weld is B. and the actual length of the weld is taken when the arc welding plate is appliedC. the actual length of the weld is -

30、10mm D., taking the actual length of the weld -13. to ensure the stiffness of the compression member, the allowable slenderness ratio of the column and the main compression bar is (B)A.100 B.150C.250 D.35014. which of the following is not true in the design of ground foundations: (C)The foundation c

31、alculation of all buildings in A. shall meet the relevant provisions of the calculation of bearing capacityB. design grade a building, should be ground deformation designC. design of grade B and C buildings, not for design of foundation deformationD. design grade C buildings, not for design of found

32、ation deformation15. according to the classification of building seismic fortification, the general industrial and civil buildings belong to: (C)A. class a building, B., class B BuildingC. class C buildings, D. Ding buildings16., a local grid, grid number is M, H1 is a grid, only corner elevation, H

33、2, H3 and H4 are two, three, four square grid corner elevation, the site design elevation H0= (C)17., cold drawn steel can be used to control the cold drawing stress and control the rate of cold drawn, used as prestressed steel bar, cold drawing should be used (B)A. control method of cold draw rate

34、B. method for controlling cold drawing stressC. control method of cold drawing speed D. method of controlling cold drawing time18. the order of pile driving should be determined according to the topography, the soil quality and the density of the pile layout. If the relationship between soil extrusi

35、on and pile driving sequence is small, the distance between piles should be (D)A.Less than or equal to 2 times the diameter of the pile B. is less than or equal to 3 times the diameter of the pileC. greater than or equal to 2 times the diameter of pile D. is greater than or equal to 4 times the diam

36、eter of the pile19. the water well is arranged in the aquifer, and the upper part of the groundwater is an impermeable layer, and the bottom of the water reaches the lower impermeable layer. The well shall be called BA. non pressure incomplete well B. intact wellC. pressure incomplete well D. full p

37、ressure well20., small section and steel reinforced concrete component, vibration should be used (A)A. external vibrator B. surface vibratorC. internal vibrator D. artificial vibration21. rotating davit and cranes work is characterized by (A)A. side lifting hook, side rotation B., first lift hook, r

38、ear rotationC. rotates first, then raises hook. D. only raises hook and does not rotateIn the 22. stream construction, the intervals between two adjacent professional teams are put into operation (A)A. flow step B. flow timeC. technique intermittent D. tissue intermittent23., the total mobile time i

39、n network planning, which does not affect the total duration of work, is called AA. total time difference, B. free time difference, C. organization, intermittent D. virtual work24., in order to prevent masonry with external scaffold overturning, improve stability, in erection should be set according

40、 to the provisions (C)A. vertical pole, B. railing, C. connecting rod, D. operation platform25., the amount of cement used for ordinary waterproof concrete is higher than that of ordinary cement (B)A. remains unchanged, B. appropriately improves C., and appropriately reduces D. without any requireme

41、nt26., the virtual work is called DA. horizontal dashed line B. wavy line C. vertical dotted D. oblique dotted lineThe core content of the 27. unit construction organization design is (A)A. construction plan, B. construction schedule, C. construction plan, D. technical measures28., roof waterproof b

42、rush cold base oil role is (B)A. add a waterproof layer, B. strengthen the asphalt and leveling layer bondingC. prevent water evaporation caused by hollowing D. protective layer from erosion of asphalt leveling29. design and construction plan, should be placed within the crane crane radius of less t

43、han is (B)C. sand, heap field D. A. B. mixing processing shed warehouse30. in the following anchorage, the prestressing tendons used in post tensioned steel tows are (B)A. bar anchor, B. steel cone anchor, C.JM12 anchor, D. screw end rod, anchorThe function of the 1. structure is summarized as (C)A.

44、 strength, deformation, stability, B. apply, economy, beautyC. safety, practicality, durability, D. carrying capacity, normal use2. the service life of the structure exceeds the design reference period (C)The A. structure loses its function and B. reliability remains the sameC. reliability decreases

45、 and D. reliability increases3. concrete protective layer means (A)A. the outer edge of the stressed steel bar is calculated from the outer surface of the B. stirrupsC. force steel bar shape arithmetic, D. force steel reinforcement point countThe minimum diameter of the longitudinal force steel bar

46、in the 4. column shall be (B)A.10, mm, B.12, mm, C.16, mm, D.18, mm5. foundation pit collapse accident includes (D).The displacement B. of A. retaining structure falls into the pit at the edge of the foundation pitC. foundation pit is flooded, D. foundation pit slope landslide6. the minimum thicknes

47、s of two-way slabs in cast-in-place floor slabs is (C)A.60mm B.70mm C.80mm D.120mm7. for structural steels, the increase in their carbon content will lead to (A)Increase of A. strength, B. can improve weldability and corrosion resistance of steelC. improves cold bending properties and impact toughne

48、ss, and D. plasticity increases8. the following construction process water pollution prevention measures are inappropriate (C)A. store oil on site,The ground must be impervious to the warehouseB. may be used as earth backfill for certain toxic and harmful wastesC. sewage from the sewage tank is regu

49、larly cleaned and disinfected to prevent pollutionThe effluent of D. terrazzo system must be precipitated and discharged after settling in the sedimentation tank9. steel structure selected steel, at least should provide a few mechanical performance index guarantee ()A. three items, B. four items, C.

50、 five items, D. two items10. which of the following steel members can not be checked for stability in design (B)?A. axial compression member B. axial tension memberC. flexural member D. tension bending or bending member11. the personnel on the edge of the deep foundation without the guardrail are (A

51、).A. risk factors, B., warning factorsC., harmful factors, D., environmental factors12. when designing the cantilever beam, the length of the cantilever beam embedded in the masonry is l 1, and the ratio of the selected length l should be greater than (C)A.1.8 B.1.5 C.1.2 D.213. the static calculati

52、on scheme of masonry structure housing can be divided into (A)The A. rigid scheme, the rigid elastic scheme, the elastic scheme, the B. elastic scheme, the elastic-plastic scheme, and the plasticity scheme are presentedThe C. rigid scheme, the elastic scheme, the D. elastic scheme, the plasticity sc

53、heme14. about the spatial effect, the error is (C)A. enhances the overall stiffness of the building B. and prevents the house from cracking due to uneven settlement of the foundationC. withstand load D. to prevent the larger vibration load on the house adversely affected15. the first level requireme

54、nt of the three level target of building seismic fortification is (B)A. crack and not fall, B. small earthquake is not badC. medium earthquake can repair D. large earthquake but not fall16. for the masonry structure house with seismic fortification requirements, the strength grade of brick masonry s

55、hould be (B)A. should not be lower than M2.5, B. should not be less than M5C. should not be lower than M7.5, D. should not be less than M1017. steam curing concrete or prestressed concrete should not be mixed with admixture (B).A. early strength agent, B. air entraining agent, C. water reducing agen

56、t, D. retarder18. deformation of foundation rock includes (A)A. settlement, uneven settlement, B. vertical subsidence and horizontal movementC. vertical subsidence, D. tilt, local tilt and subsidence, uneven settlementThe 19. heavy tamping method does not apply to the following ground (C)A. loose sa

57、nd; B. mixed soil; C. saturated soft clay; D.; collapsible loess20, to meet the requirements of foundation stability and deformation, the foundation should be as shallow as possible, except the rock foundation, the foundation shall be less than ()A.0.3m, B.0.5, m, C.0.8, m, D.1.0m21. the key parties to quality control are (C)A. owner