NEW QUESTION 18
Huawei Monitoring System NETECO Supported functions are ____________ .

NEW QUESTION 19
At the end of the discharge of lead-acid batteries, the voltage drops, and the positive and negative active materials are converted into ____________ .

NEW QUESTION 20
Regarding the description of the data center cooling system, the following ____________ is wrong.

NEW QUESTION 21
The leakage protector is mainly divided into electronic type and electromagnetic type according to the action mode.

NEW QUESTION 22
In the main road mode, when ups The front-end voltage is at 220V±10%When fluctuating,ups The output voltage will also have Larger fluctuations.

NEW QUESTION 23
The air-conditioning energy efficiency ratio is the ratio of the effective input power to the cooling capacity, and its value is W/W Express.

NEW QUESTION 24
The following air conditioners do not need to install cooling towers.

NEW QUESTION 25
The following is for high frequency ups The correct description of the rectifier components is.

NEW QUESTION 26
In the dynamic environment monitoring system, ____________ is used to indicate the severity of the corresponding fault.

NEW QUESTION 27
PUE The closer the value ____________, indicating that the energy efficiency status of the data center is good.

NEW QUESTION 28
If ups The capacity is 20KVA, Then in normal work,ups The front-end input capacity may be ____________ .

NEW QUESTION 29
____________ is a fire detector that detects smoke particles.

NEW QUESTION 30
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.

NEW QUESTION 31
ABC Circuit breakers are mainly used IT Load front end, such as ups Inside the output cabinet.

NEW QUESTION 32
The compressor is the core of the refrigeration cycle. It is the power device for the refrigerant to circulate in the system. It reduces the low temperature from the evaporator. The compressed steam is compressed into high temperature and high pressure steam.

NEW QUESTION 33
When the battery is in use, sunlight can directly shine on the battery.

NEW QUESTION 34
The dynamic environment monitoring system can be deployed in medium and large modular data centers, small modular data centers, container data centers, etc.

NEW QUESTION 35
In the data center power supply and distribution system, the low-voltage circuit breaker with three-stage protection feature is used for.

NEW QUESTION 36
The function of the following ____________ components is to help return oil.

NEW QUESTION 37
The following Does the model of air conditioner have an oil separator?

NEW QUESTION 38
The following are air-cooled row-level air conditioners ____________ .