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61 [Multiple Choice] (It is a pressure sensor whose function is to convert the water pressure signal in the system into an electrical signal.)
a Hydraulic alarm bells.
b Retarder.
c Alarm valve.
d Pressure switch.
Answer: d
Analysis: A pressure switch is a pressure sensor whose role is to convert the water pressure signal in the system into an electrical signal. In the event of a fire, in order to ensure the stable and reliable water supply of the system, the pressure switch of the system pipe network and the pressure switch of the alarm valve group should directly control the start of the fire pump and feedback its action signal to the fire control center.
62 [1. Multiple choice question] When using a diesel engine fire pump, the following do not meet the requirements ().
A diesel engine fire pump should be a compression ignition type diesel engine.
b. The battery of the diesel engine fire pump should ensure that the fire pump automatically starts the pump at any time.
c. The rated power of the diesel engine should check the influence of altitude adjustment and ambient temperature on the power of the diesel engine.
d The diesel engine fire pump should have the performance of continuous work, and the test operation time should not be less than 12h
Answer: d
Analysis: The diesel engine fire pump should have the performance of continuous work, and the test operation time should not be less than 24h.
63 [1. Multiple choice questions] The maintenance items of the electrical fire monitor do not include ().
a. Exterior maintenance of the shell.
b Indicator maintenance.
c Switch and button maintenance.
d Base stability check.
Answer: d
Analysis: Maintenance items of electrical fire monitors:
Exterior maintenance of the shell.
Indicator light maintenance.
Display care.
Switch, key maintenance.
Printer care.
Wiring maintenance. 64 [Multiple Choice] The response time of emergency lighting of lamps and lanterns in high-risk places should not be greater than ()s.
a． 0.5
b． 0.4
c． 0.3
d． 0.25
Answer: d
Analysis: The response time of emergency lighting of lamps and lanterns in high-risk places should not be greater than 025s。
65 [1. Multiple choice questions] Information display and query function: The controller information display is arranged in the order of () and other states from high to low.
a Fault alarm and shielding.
b. Fault alarm, supervision alarm.
c Alarm control and start-up.
d. Fire alarm, regulatory alarm.
Answer: d
Analysis: Functions of the fire alarm controller:
Information display and query function: the controller information display is arranged from high to low in order of (fire alarm, regulatory alarm) and other statuses. High-level status information is displayed first, and low-level status information should not affect the display of high-level status information.
66 [Multiple Choice] Class B factory with Class II fire resistance grade, the maximum allowable number of building floors is () floors.
a． 2b． 3
c． 5d． 6
Answer: d
Analysis: The number of floors of the plant and the maximum allowable construction area of each fire partition are shown in the following table.
67 [Multiple Choice] The following diagram shows a schematic diagram of the structure of ().
a Wet alarm valve.
b Hydraulic alarm bells.
c. End water test device.
d Inflatable and barometric maintenance devices.
Answer: d
Analysis: The schematic diagram of the structure is an inflation and air pressure maintenance device, which is an important part of the dry system, which is mainly used to inflate the pipe network on the system side and maintain the air pressure in the pipe network on the system side.
68 [1. Multiple Choice] Click "Print" in the () menu to pop up the print settings window.
a Document.
b Commencement.
c Page layout.
d view.
Answer: a
Analysis: Click "Print" in the "File" menu to pop up the print settings window.
69 [Multiple Choice] In the description in the information indication section of the Graphic Display Device (CRT), () is on: indicates that the Graphic Display Device is connected to the fire alarm controller.
a Fire Warning.
b Communication instructions.
c Feedback indications.
d Regulatory directives.
Answer: b
Analysis: In the description in the information indication section of the graphic display device (CRT), (communication indicator) is on: it means that the graphic display device is connected to the fire alarm controller.
70 [1. Multiple choice question] Which of the following systems uses an open sprinkler ().
a Wet sprinkler system.
b Dry sprinkler system.
c Sprinkler system.
d Pre-action sprinkler system.
Answer: c
Analysis: Classification of sprinkler system: According to the form of sprinkler used in the system, it is divided into two categories: closed sprinkler system and open sprinkler system. Wet, dry, pre-acting, automatic sprinkler and foam systems are closed-type systems that use closed sprinkler heads. Rain, water spray, and water curtain are open systems that use open sprinkler heads.
71 [1. Multiple choice question] For large unobstructed spaces or rooms with special requirements, it is advisable to choose ().
a Linear constant temperature fire detector.
b. Linear fiber optic temperature sensing fire detector.
c. Cable-type temperature sensing fire detector.
d Linear beam smoke fire detector.
Answer: d
Analysis: For unobstructed large spaces or rooms with special requirements, it is advisable to choose linear beam smoke and fire detectors.
72 [1. Multiple choice questions] *In the classification of hazardous areas, zone 20 refers to ().
a Environments in which gas mixtures are present continuously or for long periods of time.
b Environments where there is a continuous or long-term occurrence of ** dust mixtures.
c Environments where ** dust mixtures may occur during normal operation.
d During normal operation, there may be an environment where the gas mixture may occur.
Answer: b
Analysis: **Hazardous area categories and their zoning are shown in the table below.
73 [1. Multiple choice question] When the automatic transfer switch of the fan electrical control cabinet is in the "manual" position, the following statement is wrong ().
a The fan can only be controlled on-site by the control cabinet start and stop button.
b. The remote manual control of the fire control room fails.
c. The remote automatic linkage control of the fire control room fails.
d The fire control room can be controlled remotely and manually.
Answer: d
Analysis: When the automatic transfer switch of the fan electrical control cabinet is in the "manual" position, the remote manual and automatic linkage control of the fire control room fails.
74 [1. Multiple choice question] The fire extinguisher that can be used for ABCE fires is ().
a Water-based fire extinguishers.
b Foam fire extinguisher.
c Carbon dioxide fire extinguishers.
d Ammonium phosphate dry powder fire extinguisher.
Answer: d
Analysis: The fire extinguisher that can be used for ABCE fires is ammonium phosphate dry powder fire extinguisher.
75 [Multiple Choice] Some bus control panels are equipped with () for selecting the manual working mode, which can be set to two working states: manual "allow" and manual "prohibit".
a Combination lock.
b Manual lock.
c Fingerprint lock.
d Automatic lock.
Answer: b
Analysis: Some bus control panels are equipped with manual locks for selecting manual working modes, which can be set to two working states: manual "allow" and manual "prohibit".
76 [1. Multiple choice questions] Electrical technology text symbols are divided into two categories: basic text symbols and auxiliary text symbols. Basic text symbols mainly represent the types of electrical equipment, devices and components, and are divided into single-letter symbols and two-letter symbols. The two-letter symbol "km" indicates ().
a AC relay.
b Contactors.
c Delay relay.
d Polarization relay.
Answer: b
Analysis: AC relays are represented by "ka";
The delay relay is denoted by "kt";
Polarization relays are denoted by "kp".
77 [Multiple Choice] When 14 or more half-cycle fault arcs occur in the detected line within 1s, the fault arc detector should be able to send an alarm signal within (), light up the alarm indicator light, and send an alarm signal to the electrical fire monitoring equipment.
a． 10s
b． 30s
c． 40s
d． 100s
Answer: b
Analysis: When 14 or more half-cycle fault arcs occur in the detected line within 1s, the fault arc detector should be able to send an alarm signal within 30s, light up the alarm indicator light, and send an alarm signal to the electrical fire monitoring equipment.
78 [Multiple Choice] The description of the scope of application of fire extinguishing agents for water systems is incorrect ().
A can be burned in case of water, and cannot be extinguished with water.
b. Mist water can be used to extinguish smoldering material fires, combustible dust fires, and electrical equipment fires.
c Water vapour can be used to extinguish fires in enclosed spaces (e.g. ship holds).
d Solid matter fires can be extinguished with *** or flowering water.
Answer: d
Analysis: The scope of application of fire extinguishing agent for water system:
1) Use *** or flowering water to extinguish the surface fire of general solid matter and heavy oil fire with a flash point of more than 120.
2) Mist water can be used to extinguish smoldering material fires, combustible dust fires, and electrical equipment fires.
3) Water vapor can be used to extinguish fires in enclosed spaces (such as ship cabins).
Any substance that can be burned and ** in case of water cannot be extinguished with water.
79 [1. Multiple choice question] The electrical control cabinet of the fire pump unit should make the fire pump in ().
a Manual start of the pump.
b. Automatic start pump status.
c No electricity.
d Automatic shift status.
Answer: b
Analysis: The electrical control cabinet of the fire pump unit should make the fire pump in the automatic start state at ordinary times.
80 [1. Multiple choice question] In the fire prevention measures of capacitors, in order to prevent overvoltage, the operating voltage shall not exceed () times the rated voltage.
a． 1.1
b． 1.3
c． 1.5
d． 1.7
Answer: a
Analysis: In order to prevent overvoltage, the operating voltage does not exceed 11 times the rated voltage, the operating current should not exceed 13 times the rated current.
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