Climbing personnel must be equipped with necessary safety belts that meet the safety requirements, and use them correctly and reasonably according to the use regulations, while being supervised.
According to different classifications of electrolytes, batteries can be divided into ____________ and ____________ .
R410A The moment the refrigerant is sprayed to the outside, it can freeze human skin and deep muscles in a very short time, and cause skin necrosis at the frostbite site.
The function of the fire-fighting system is to automatically capture the smoke or heat in the fire detection area when a fire occurs, so as to issue an audible and visual alarm and automatically extinguish the fire.
The following are indirect contact heat and moisture treatment equipment ____________ .
Environmentally friendly refrigerant R410A Refrigeration performance is better than non-refrigerant R22 better.
For valve-regulated lead-acid batteries, the function of the safety valve is ____________ .
The dynamic environment monitoring system focuses on data center infrastructure management, and supports the monitoring of power supply equipment, cooling equipment, environmental equipment and security equipment in the data center.
Compared with comfort air conditioners, special air conditioners for computer rooms have the following advantages ____________ .
During the construction process, the operation with debris splashing should be used ____________ .
The following ____________ are used in Huawei's row-level precision air conditioners.
____________ Not part of Huawei's monitoring system NETECO Provide monitoring functions.
For only having Modbus The power supply and distribution equipment of the agreement can be passed ____________ Connected to the dynamic loop monitoring system.
In the data center power supply and distribution system, the low-voltage circuit breaker with three-stage protection feature is used for.
Exist UPS in the system, the most comprehensive description of the role of the inverter circuit is ____________ .
Dual power switch ATS According to different switch types, it can be divided into ____________ .
UPS The front-end input can be two mains, one main and one standby, or one mains and one diesel engine input.
There are three different classifications of grounding forms in low-voltage power distribution systems, ____________ . The second capital letter represents ____________ .
At present, the communication methods used by the dynamic environment monitoring system are ____________ .
When the AC power equipment is introduced in the three-phase four-wire system, in addition to the grounding of the near end of the power transformer, the near end of the electrical equipment and the equipment room should be grounded repeatedly on the neutral line.
The following ____________ Is the correct statement 6Two fixed valve-regulated sealed lead-acid battery cells are connected in series, and the rated capacity is 150AH.
R410a Refrigerants can produce the greenhouse effect and destroy the ozone layer.
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TESTED 24 Nov 2024
