二级司炉工模拟考试第二套(附带正确答案)（Second set of second-level fireman simulation test (with the correct answer)）

1、二级司炉工模拟考试第二套(附带正确答案)（Second set of second-level fireman simulation test (with the correct answer)）1 true or false water under a standard atmospheric pressure, the temperature of 4 , the minimum volume, density is the largest. The square root is the right answer2. The water content in the coal burnin

2、g of boiler can lower the calorific value of coal, so the less water content, the better. The answer is yesThe boiler pressure should not exceed the rated working pressure when the boiler is running. The square root is the right answerThe electric centrifugal pump must fill the water suction pipe an

3、d pump before starting. The square root is the right answerThe function of oil burner of fuel burner is to use high pressure to spew oil out of the hole to get good atomization. The square root is the right answerIn the boiler operation, the lever safety valve is leaking, and the weight of the weigh

4、t can be shifted to stop the leakage. The answer is yesThe heating surface of the boiling furnace in the suspension section is called the buried pipe. The answer is yesThe water return of the steam boiler is the condensate after the steam is doneThe drop tube should be arranged in the furnace to abs

5、orb radiation heat. The answer is yes10 judge the steam reciprocating pump to handle the heating pipe before starting. The square root is the right answerThe boiler can be divided into steam boiler and hot water boiler. The answer is yesOne of the functions of the boiler drum is to purify the steam.

6、 The square root is the right answerThe difference between the outlet of the fan outlet and the inlet pressure is called the wind pressure of the fan. The square root is the right answerThe pressure marked on the nameplate of the boiler product is the rated work pressure of the boiler, which is the

7、absolute pressure. The answer is yesIn order to ensure the normal use of the coal machine and to conduct regular inspection of the wire rope. The square root is the right answerThe larger the impeller diameter of the electric centrifugal pump, the higher the outlet pressure. The square root is the r

8、ight answerWhen the boiler raises the fire, it should be lower than the normal running time. The answer is yes18. The smaller the chloride ion content in the boiler water, the better the content is too high and easy to accelerate the corrosion of the boilerThe defouling device in the hot water heati

9、ng system should be installed in the inlet side of the circulating pump. The square root is the right answerWhen two or more people are working inside the pot, the outside of the boiler can be unattended. The answer is yesThe steam boiler is not allowed to adopt water seal safety device. The answer

10、is yesThe boiler room should not be connected to the residence. The square root is the right answerA pressure gauge shall be installed on the inlet pipe and outlet pipe of the boiler circulating water pump. The square root is the right answer24. The safety valve of the water heater valve shall be pr

11、otected against freezing and the discharge shall be unimpeded. The square root is the right answerIn order to ensure the full combustion of fuel, the air volume should be increased as far as possible. The answer is yesThe boiler's thermal efficiency can be reduced by overload or low load. The sq

12、uare root is the right answerWhen the carbon dioxide emitted into the air reaches a certain level, it will form acid rain.It can be harmful to human health and labor and agricultural production. The answer is yesThere is an anti-balance method and positive balance method for energy efficiency testin

13、g of boiler. The square root is the right answer29. The special equipment safety supervision ordinance provides that special equipment safety supervision and administration departments shall carry out special equipment safety, energy-saving education and training for special equipment operators. The

14、 answer is yesThere is an anti-balance method and positive balance method for energy efficiency testing of boiler. The square root is the right answer30 true or false "special equipment safety supervision regulations" regulation, boiler, pressure vessel, pressure piping components, manufac

15、turing process of hoisting machinery, large amusement facilities, must by the state council special equipment safety supervision and administration department for approval of the examination institution shall, in accordance with the requirements of technical specification for safety supervision and

16、inspection; It is not allowed to leave the factory or deliver the goods without supervision and inspection. The square root is the right answerThe higher the pressure, the steam temperature (). The lower the a.The higher the B.C. the sameD. do not necessarilyB correctThe project measurement unit 10

17、KGF/cm < SUP > 2 < / SUP > is approximately equal to the current legal system of units (). A. 0.01 MpaB. 0.1 MpaC. 1 MpaD. 10 MpaC is correctThe low heat energy of the standard coal is (). A. 5,000 kcal/kgB. 6000 kcal/kgC. 7000 kcal/kgD. 8000 kcal/kgC is correctAbsolute pressure () table

18、 pressure AB. is greater than theC. equal to theB correctThe negative pressure of A single topic is A value below (). Absolute pressureB. atmospheric pressureC. table pressureD. Vacuum pressureB correct36 newly installed and serviced pumps shall be () before starting. A. The pump motor turns the pum

19、p several timesB. The empty load will run for five minutesC. Rotate the rotor of the centrifugal pump several times by handThe load runs for five minutesC is correctSteam boiler water supply pipeline (). A. Feed water cut-off valve shall be installed between the drum and water check valve and connec

20、ted to the water check valve;B. Water check valves shall be installed between the drum and water supply cut-off valves, and shall be connected to the feed water cut-off valve.C. BothA is correct38 single topic selection classes of bituminous coal in the boiler model code is (). A. W B. QC. A D. A C

21、is correctWhen a water alarm is issued, the method of judging the full water or water shortage is (). A. observe water levelB. According to different signalsC. According to different marksD. according to the boiler loadB correctThe unit of the power of hot water boilers is (). A. t/hB. kg/hC. kJ/hD.

22、 MWD answers correctlyThe steam trap valve is installed in the cylinder to discharge (). A. waterB. steamC. steam and waterA is correct42 the flow direction of the flow line type globe valve is (). A. high in and low outB.Higher than that of low intoC. BothB correctThe hardness of the bicarbonate is

23、 characterized by the decomposition of the carbonates immediately after heating, also known as () a. permanent hardnessB. temporary hardnessC. negative hardnessB correctThe limit value of the dial scale of a pressure gauge is 10 MPa with the accuracy rating of 1. 5. The allowable error of the pressu

24、re gauge is (). A. Plus or minus 0.01 MPaB. Plus or minus 0.015 MpaC. Plus or minus 0.1 MPaD. Plus or minus 0.15 MPaD answers correctly45 single boiler with a few blow-down pipes at the same time (). A. The amount of pollution per drain pipe should be about the sameB. Increase the discharge of a sew

25、age pipe which is convenient for operation to replace the other oneC. All sewage pipes shall be carried out in rotationC is correctThe total hardness of water supply should not be greater than (a.0.03 mmol/L) a.0.03 mmol/LB. the tendency for 0.3 LC. tendency for 0.06 LD. the tendency for 0.6 LD erro

26、r47 when the valve is leaking steam, the method to be taken is (). A. Pressure spring for spring safety valveB. The lever safety valve is weighted with the external shift hammerC. Increase pressure on boilersD. use manual pull rod and other methods to move the valve coreD answers correctlyA water le

27、vel table () A. AB. the glass plates are cracked by steamC. the water level is stagnantD. the water level has fallen sharplyC is correctThe sewerage tube in the flue is located at the inside of the flueB. Reliable insulationC. BothB correctThe position of the three - pass cock should be changed to (

28、) when the pressure gauge is under water. A. the boiler communicates with the atmosphere and pressure gaugeB. the boiler is the same as the atmosphere and the pressure gauge is cut offC. The boiler and pressure gauge are cut off, and the pressure gauge communicates with the atmosphereB correctThe co

29、de name of the vertical reciprocating grate boiler is (). A. DZWB. DHWC. SZWD. SHWA is correctWhen the centrifugal fan is running, the gas can automatically enter the fan because of the impeller center (). A. high temperaturesB. for vacuumC. to negative pressureD. the temperature lowC is correctThe

30、highest sensitivity of the following temperature gauges is (). A. glass thermometerB. pressure thermometersC. Thermocouple thermometerC is correctThe manual emission test of the relief valve during the period of the higher pressure of the single selected topic should be at the pressure of the pressu

31、re relief valve () A. 1/4B. 1/2C. 3/41 D.C is correctThe burner of small pulverized coal stove is usually arranged in (). A. the front wallSide B.C. roofD. the cornersA is correctThe circulating water pump is usually () due to the water and pressure characteristics of the hot water boiler. A. Single

32、-suction single-stage pumpsB.Single-suction multi-stage pumpC. double suction single-stage pumpD. Double suction multi-stage pumpC is correct57 single topic selection is the combustion method of double-sided ignition (). A. Chain grateB. double grateC. reciprocating grateD. fixed grateD answers corr

33、ectlyThe unit of steam boiler output is (). A. t/hB. MWC. kcal/hD. kJ/hA is correctThe factor that causes water level glass to erode in use is (). A. The hardness of the pot is highB. The hardness of the pot is lowC. the water is high in alkalinityD. the water is low in alkalinityC is correctHigh -

34、temperature hot water boilers are generally rated as rated outlet hot water temperature above or equal to (). A. 120 B. 115 C. 100 D. 130 A is correctThe damage to the boiler is (). A. The heating surfaceB. Cause the soda to riseC. metal corrosionD. the smoke temperature risesC is correctThe lift of

35、 circulating water pump of the hot water boiler of the single selected topic shall not be less than (). A. Static pressure at the highest point of the hot water cycle systemB. The combined pressure drop of the hot water system and boilerC. Rated water pressure of boilerB correctThe unit shall use th

36、e registration certificate (). A. properly stored in the unit file roomB. It hangs in the boiler roomC. hang in the officeD. All of the aboveB correctIf the boiler is to be disabled () above, the use unit shall seal the boiler and return the registration certificate to the registration authority for

37、 preservation. A. 1 yearB. 2 yearsC. 3 yearsD. 6 yearsA is correctIn the case of the circulating water pump of the hot water boiler, the pipe shall be fitted with A by-passB. check valveC. a gateB correct66 single topic selection level boiler operators should have () and above educational level. A.

38、the junior middle schoolB. the elementary schoolC. high schoolD. collegeA is correctThe following most appropriate relief valve opening pressure differential is (A? B?). A. 5% of the total pressureB. 1% of the total pressureC. 15% of the total pressureD. 10% of the total pressureC errorWhen the pres

39、sure component of the boiler under the selection of a single topic is made, the board should be the regular shape and the four corners should be (). A. The radius is not less than 100mm round AngleB. right AngleC. Both of them are acceptableA is correctThe check period of the safety valve is at leas

40、t (). A. half an yearB. 1 yearC. 3 yearsD. 2 yearsB correctIf the total capacity is greater than or equal to () of the steam boiler room, it shall set up the discharge vessel or discharge heat exchanger so as to recover the heat of sewage discharge and reduce the loss of sewage. A. 2 t/hB. 4 t/h10 t

41、/h C.D. 20 t/hC is correctThe technology that can achieve good energy saving effect is (). A. baffle regulationB. load regulationC. Variable frequency controlD. switch adjustmentC is correctThe least thermal conductivity of the following substances is (). A. dustB. scaleC. the steel plateD. steel pi

42、peA is correctIn the case of oil and gas boilers, which of the following is the main heat loss (). A. exhaust heat loss q < SUB > 2 < / SUB >B. Thermal loss q < SUB > 3 < / SUB >C. Heat loss q < SUB > 5 < / SUB >D. Physical heat loss of ash residue q < SUB >

43、 6 < / SUB >A is correctThe key to eliminating smoke in the list of 74 is to make the coal burn sufficiently and not produce carbon monoxide and (?). It is. A. fly ashB. SO < SUB > 2 < / SUB >C. NOD. carbon blackD answers correctlyIf the boiler can be tested by anti-equilibrium met

44、hod, the other boilers should be tested with the positive balance method and the counterbalance method. A. 1 t/hB. 6 t/h10 t/h C.D. 20 t/hD answers correctlyThe waste of fuel is caused by the fouling of the 76 single boiler, because of the poor thermal conductivity of the scale, which seriously impe

45、des (). A. the heat transferB. fuel combustionC. Steam flowD. the water cycleA is correct77 single topic selection "special equipment safety supervision regulations" regulation, (), should be strict enforcement of regulations and laws and administrative regulations concerning safety produc

46、tion, to ensure the safe use of special equipment. A. Special equipment use unitB. Special equipment inspection and testing institutionC. Special equipment supervision and management departmentD. Safety production management departmentA is correct78 single topic selection "special equipment saf

47、ety supervision regulations" regulation, special equipment directory by the () is responsible for special equipment safety supervision and administration department (hereinafter referred to as the special equipment safety supervision and administration department under the state council) for a.

48、 under the state councilB. at the provincial levelC. municipalA is correct79. The special equipment operators' supervision and management measures shall stipulate that the persons who apply for the special equipment operation personnel certificate shall be at () above. A. 18 one full year of lif

49、eB. eighteenC. 16 one full year of lifeD. the age of 16A is correct80 single topic selection "special equipment safety" regulation, the state supports scientific and technological research on special equipment safety, encourage the application of advanced technology and advanced management

50、 methods, to units and individuals that have made outstanding contributions to give (). A. to encourageB. watch YangC. rewardsD. who,C is correctThere are several forms () for the heat transfer of multiple choice questions. A. the conductionB. convectionC. radiationD. transmissionABC answers correct

51、ly82 multiple topics can result in the failure of water level sheet glass plates. A. The fluctuation of working pressure during the boiler operationB. The pressure of the glass plate is too tight to hold the glass plate heatedC. not preheating directly after replacing the glass plateD. The glass pan

52、els are splashed with cold water and suddenly cooling and contractingBCD is correct83 multiple-choice questions in the boiler model for DZL1-0.4 - A parameter is (). A. The rated evaporation is 0.4t/hB. The rated evaporation is 1t/hC. Rated work pressure is 0.4mpaD. Rated work pressure is 1.0 MPaBC is correctMore than 84 hot water boilers and circulatory systems need to be installed in the position of the gas collector (). A. The highest point of the hot water systemB. the height of th