Weak current College】 【the air conditioning with cooling technology law questions and answers reference 12 --- Power By】 【China power house network.

<br> 201, heat pump air conditioner and heating, indoor fan and compressor start relationship is (C). <br> (A) at the start (B) fan started before starting after the compressor (C) compressor start, fan after .(D) no sequence start <br> 202, split air conditioner receiver length is limited, when liquid pipe for high pressure liquid refrigerants, refrigeration capacity less than 3KW of camion receiver length limited to (A) m. <br> (A) .10 (B) 15 (C) 20 (D) 30 <br> 203, split air conditioner receiver length is limited, when liquid pipe for high pressure liquid refrigerant, the cooling capacity is less than the split-type air conditioner 4.5KW receiver .length limited to (C) m. <br> (A) 10 (B) 15 (C) 20 (D) 30 <br> 204, split air conditioner receiver length is limited, when fluid tube for low-voltage two-phase .refrigerant, the cooling capacity is less than the split-type air conditioner 3KW receiver length limited to (D) m. <br> (A) 10 (B) 15 (C) 20 (D) 30 <br> 205, split air .conditioner receiver length is limited, when liquid pipe for high pressure liquid refrigerant, the cooling capacity of less than 3 ~ 4.5KW camion receiver height difference limited to (B) m. <br> (A) 10 (B) 15 (C) .20 (D) 30 <br> 206, split air conditioner receiver length is limited, when fluid tube for low-voltage two-phase refrigerant, the cooling capacity of less than 3 ~ 4.5KW camion receiver height difference limited to (D) m .. <br> (A) 10 (B) 15 (C) 20 (D) 30 <br> 207, Chief of air cooled air conditioners joins should be no more than (C) m. <br> (A) 10 ( .B) 20 (C) 30 (D) 40 <br> 208, air conditioner refrigeration system picks up Leaky's focus is on (B). <br> (A) water pick barometric pressure leak (B) (C) found leaking vacuum .pick leakage (D) charging refrigerant leakage found <br> R22 refrigerant is 209, air pressure leak test for the nitrogen-filled up pressure MPa for (D). <br> (A) 1.0 (B) 1.2 ( .C) 1.6 (D) 1.8 <br> 210, air conditioners for pneumatic pick leakage, pressure and pressure drop for 24h qualified, or when the device environment temperature and pressure changes only 3oC (A) is qualified. <br .> (A) 1% (B) 5% (C) 2% (D) 3% <br> 211, central air conditioning water system water pressure test of strength test pressure MPa for (C). <br> (A) .0.3 (B) 0.6 (C) 0.9 (D) 1.2 <br> 212, central air conditioning water system water pressure test pressure tightness test (B) MPa. <br> (A) 0. .3 (B) 0.6 (C) 0.9 (D) 1.2 <br> 213, central air-conditioning system pressure test is required for the purposes of pressure gauges should be not less than (B). <br .> (A) a (B) two (C) three (D) four <br> 214, conduct water system pressure test-test of strength, the test pressure is reached as far as pressure (B), the pipeline does not leak ., no deformation is qualified. <br> (A) 10min (B) 30min (C) 1h (D) 2h <br> 215, conduct water system pressure tightness test in the test, the test pressure is reached as far as pressure ( .D) and to conduct a comprehensive test line. <br> (A) 10min (B) 30min (C) 1h (D) 2h <br> 216. using benchmarks to adjust air outlet vent adjusting method out of the air flow is more .convenient to adjust the time from the outlying fan, (C) air duct of a pipe. <br> (A) the recent Department of (B) intermediate Office (C) the most distant (D) any Department <br> 217, .Datum draught adjustment Act to each duct a tube in the actual air flow and design of air volume ratio (A) air outlet to the unit's main pipe outlet of the Datum. <br> (A) a minimum of (B) (C) .of the Center (the biggest D) arbitrary <br> 218, determination of the indoor temperature, relative humidity, should generally be continuous measurement (D) detection and assessment of the use of air conditioning equipment. <br> (A) (B .) 4h 2h (C) 8h (D) 12h above <br> 219, (D) is not a device running the basic contents of the records. <br> (A) the equipment on and downtime (B) equipment operating parameters < .br> (C) no class of material consumption (D) the equipment of the security operation procedures <br> 220, equipment records basic content including (C) <br> (A) the equipment normal boot and downtime (B) equipment working .parameters (<br> (C) class of material consumption (D) device security operation procedures <br> 221, (C) is not a set of basic rules of operation. <br> (A) equipment, usage manual and the corresponding .product standard (B) equipment characteristics <br> (C) equipment for planned maintenance (D) the actual use of experience <br> 222, (B) is the practice of basic equipment. <br> (A) technical training plan ( .B) emergency accident processing and reporting procedures <br> (C) shift system (D) energy and materials consumption <br> 223, compressor oil temperature normal General 2 40 ~ 60oC, not more than (B) oC. <br> ( .A) 65 (B) 70 (C) 75 (D) 80 <br> 224, motor insulation level of temperature rise, E-allowed to (D) oC. <br> (A) 60 (B) 65) (C .) 70 (D) 75 <br> 225, ammonia compressor running time of suction temperature than evaporation temperature oC high (A). <br> (A) 5 ~ 10 (B) 5 ~ 12 (C) 5 ~ 75 (D .) 5 ~ 20 <br> 226, freon and normal operation of the compressor suction temperature than evaporation temperatureDegrees (C) oC. <br> (A) 5 ~ 10 (B) 5 ~ 12 (C) 5 ~ 75 (D) .5 ~ 20 <br> R22 refrigerant is 227, the freon compressor discharge temperature must not exceed (D) oC. <br> (A) 125 (B) 135 (C) 140 (D) 145 <br> 228, lubricating oil .regeneration treatment of chemical handlers are: acid, alkali washed, (B), dehydrated and discolored. <br> (A) warming (B) washing (C) precipitation (D) filtering <br> 229, electric defrosting method applies to ( .A). <br> (A) refrigeration equipment (B) refrigeration equipment (C) air conditioning equipment (D) low temperature equipment <br> 230, hot-water defrost method applies to (B). <br> (A) .refrigeration equipment (B) refrigeration equipment (C) air conditioning equipment (D) low temperature equipment <br> 231, hot gas defrost operation, the pressure control in General and (C) MPa. <br> (A) 0.2 ( .B) 0.4 (C) 0.6 (D) 0.8 <br> 232, water defrost is tricking water appliance to (B) surface water spray, cream melts. <br> (A) the condenser (B) .the evaporator (C) a cooler (D) recuperator <br> 233, high pressure fluid for the highest level of work shall not exceed 80 per cent, the minimum shall not be less than (C), <br> (A) 20 .% (B) 25% (C) 30% (D) 35% <br> 234, ammonia liquid separator working fluid level should be in (D) below. <br> (A) 1 / 4 (B) 1 / 3 .(C) 2 / 3 (D) 1 / 2 <br> 235, refrigeration systems, piping should be based on the nature of painting, which exhaust pipe to (B). <br> (A) blue (B) red ( .C) yellow (D) Green <br> 236, refrigeration systems, piping should be based on the nature of painting, in which ammonia as a refrigerant liquid pipe as (C). <br> (A) blue (B) red ( .C) yellow (D) Green <br> 237, repair equipment when temporary lighting to be adopted (B). <br> (A) table lamp (B) light flashlight chandelier (C) activities (D) lighters <br> 238 .. in the device before entering the (B) replacement of wear parts, we can make the device failure rates decline. <br> (A) initial failure period (B) wear failure issue (C) accidental failure period (D) equipment running .-in period <br> 239, under normal circumstances, the cumulative run compressor (C) about should be repaired. <br> (A) one year (B) (C) 2500h 6000h (D) 700h <br> 240, under .normal circumstances, condenser, evaporator, heat exchanger cumulative run (A) about major repair should be performed. <br> (A) one year (B) (C) 2500h 6000h (D) 700h <br> 241, (A) is .not a compressor parts cleaning agent. <br> (A) (B) SOAP water and ethanol (C) kerosene (D) carbon tetrachloride <br> 242, on removal more difficult parts, available (C) after the demolition of the invasion .. <br> (A) (B) SOAP water and ethanol (C) kerosene (D) carbon tetrachloride <br> 243, rubber seals should be used (B) cleaning. <br> (A) (B) SOAP water and .ethanol (C) kerosene (D) carbon tetrachloride <br> 244, for the normal operation of equipment maintenance, in the following statement is not correct (C). <br> (A) maintain the crankcase oil level and oil to ensure good .lubrication conditions <br> (B) Note the bearing temperature monitoring equipment and operation of the current operation of the listening device sound <br> (C) regular checking cleaning air admittance valve, ball valve, thermostatic expansion valves, etc. filter <br .> (D) regular checks of all instruments, controllers working state <br> 245, for the short downtime after the maintenance, the following statement is not correct (D). <br> (A) check whether there is leakage phenomenon, leakage .point should be processed in a timely manner <br> (B) for freon system should check the oil situation is good <br> (C) use downtime intermittent discharge condenser and reservoir fluid air <br> (D) the system low pressure side .of the refrigerant recovered to high pressure in the reservoir and dispenser <br>.