Answer: A
2020 edition textbook P166
This question tests the technical requirements for fire protection engineering construction. After the fire water supply pipe network is installed, it should be tested for strength, flushing and tightness. After the construction of the fixed fire monitor fire extinguishing system is completed, the spray function should be debugged. After the installation of the fire extinguishing agent delivery pipeline of the gas fire extinguishing system is completed, the strength test and air pressure tightness test should be carried out and passed. The debugging projects of the gas fire extinguishing system should include simulated start-up test, simulated jet test and simulated switching operation test. The linkage control components of dry powder fire extinguishing devices should undergo simulated start-up tests, including automatic simulated start-up and manual simulated start-up tests.