What is the passing score for a fire engineer?The first-level fire engineer examination implements a relatively fixed passing standard, and is 60% of the full score, the full score of the three subjects is 120 points, 72 points is the passing score line, and the three subjects can be passed if they reach 72 points and above.
First Class Fire Engineer Pass Grade.
From 2022, the number of professional and technical personnel vocational qualification examinations with relatively fixed qualification standards will be increased from 17 to 33. The Ministry of Human Resources and Social Security released the 2022 first-level fire engineer examination qualification standards, the passing standard for each subject is 60% of the full score of the test paper, the total score of the first-level fire protection is 120 points, and the passing standard is 72 points.
1[.Multiple choice] The smoke exhaust fan should ensure that it can work continuously under the environmental condition of 280 for no less than () min.
a.30b.40
c.60d.120
Answer]a analysis] The smoke exhaust fan should be guaranteed to be at 280. c. It can work continuously for no less than 30min under environmental conditions. Therefore, the correct answer to this question is A.
2[.The following statement about smoke-proof facilities with mechanical pressurized air supply is wrong ().
a.The pressurized blower should use medium and low pressure centrifugal fans or axial fans.
b.Normally closed air supply outlets are manually or electrically opened and are often used in the front room or in the shared front room.
c.The self-hanging louvered air outlet usually closes by the gravity of the louver and opens itself when pressurized, and is often used in smoke-proof stairwells.
d.The smoke-proof facilities of mechanical pressurized air supply include pressurized blower, pressurized air supply pipe, pressurized air supply outlet, smoke retaining vertical wall, etc.
Answer]d analysis] Smoke-proof facilities for mechanical pressurized air supply: Smoke-proof facilities for mechanical pressurized air supply include pressurized blowers, pressurized air supply pipes, pressurized air supply outlets, etc. When the smoke-proof stairwell is pressurized and the antechamber is not, there may also be a residual pressure valve on the partition wall between the stairwell and the antechamber. 1) Pressurized blower. Generally, medium and low pressure centrifugal fans or axial fans are used. Pressurized air supply ducts are made of non-combustible materials. 2) Pressurized air outlet. It is divided into normally open, normally closed and self-hanging louvers. Normally open, that is, the ordinary fixed-blade louver tuyere;The normally closed type is manually or electrically opened, and is often used in the antechamber or in the shared antechamber;The self-hanging louver usually closes by the gravity of the louver and opens by itself when pressurized, and is often used in smoke-proof stairwells. The smoke barrier is a mechanical smoke exhaust facility, not a mechanical pressurized air supply facility, and option D is wrong. The answer to this question is d.
3[.The difference between the smoke exhaust fan and the pressurized blower is that the smoke exhaust fan should be guaranteed to work continuously for no less than () min under the environmental conditions of ().
a.70，30
b.280，30
c.280，70
d.70，70
Answer]b analysis] smoke exhaust fan. Smoke exhaust fans can generally use centrifugal fans, mixed-flow fans or axial fans for smoke exhaust, and also use fan boxes or rooftop fans. The difference between the smoke exhaust fan and the pressurized blower is that the smoke exhaust fan should ensure that it can work continuously for no less than 30min under the environmental condition of 280. The answer to this question is b.
4[.Multiple choice] When the smoke exhaust pipe is set in the ceiling, it should be insulated with non-combustible materials, and should be kept at a distance of not less than () mm from combustibles.
a.100b.150
c.220d.300
Answer]b analysis] according to the "Technical Standard for Building Smoke Prevention and Exhaust System" GB51251-201744.9. When there are combustibles in the ceiling, the smoke exhaust pipe in the ceiling should be insulated with non-combustible materials, and should be kept at a distance of not less than 150mm from the combustibles. The answer to this question is b.
5[.Multiple choice] On-site inspection of smoke prevention and exhaust system components, the following inspection results do not meet the requirements of the specification ().
a.The specifications and models of smoke exhaust and fire dampers meet the design requirements, and the manual opening is flexible, and the closing is reliable and tight.
b.The fire damper operates reliably and works normally at maximum working pressure.
c.The specifications and models of the air supply outlet should meet the design requirements, and the manual opening should be flexible and the closing should be reliable and tight.
d.The flammability of the material made of flexible short pipes is B1 grade.
Answer]d analysis] according to the "Technical Standard for Building Smoke Prevention and Exhaust System" GB51251-201762.2. All kinds of valves (ports) in the smoke prevention and smoke exhaust system shall comply with the following provisions: 1) Smoke exhaust fire dampers, air supply outlets, smoke exhaust valves or smoke exhaust ports must comply with the provisions of the relevant fire protection product standards, and their models, specifications and quantities shall meet the design requirements, and the manual opening shall be flexible and the closure shall be reliable and tight. 2) The driving devices of fire dampers, air supply outlets, smoke exhaust valves or smoke exhaust outlets should be reliable and work normally at the maximum working pressure. 3) The material of the flexible short pipe of the smoke prevention and exhaust system must be non-combustible materials. The answer to this question is d.