NEW QUESTION 106
The user can upgrade the device version in the ____________ interface.

NEW QUESTION 107
The fire fighting system of the computer room is mainly composed of ____________ system.

NEW QUESTION 108
International Electrotechnical Commission ____________. The specified contact voltage limit is
____________V, And stipulate 25V. The following does not need to consider the prevention Safety measures to prevent electric shock.

NEW QUESTION 109
STS The static transfer switch can switch between different input power sources and provide dual power supply for single power loads.

NEW QUESTION 110
R410a Refrigerants can produce the greenhouse effect and destroy the ozone layer.

NEW QUESTION 111
The following outdoor unit models belong to dual fans are ____________ .

NEW QUESTION 112
High sensible heat ratio is the only difference between precision air conditioners and civil air conditioners.

NEW QUESTION 113
There are generally two types of variable air volume ventilated floors, one is through an adjustable air valve, and the other is a dedicated ventilated floor plus adjustable fans.

NEW QUESTION 114
The basic principle of the rotary dehumidifier is that the water vapor encounters the condensation water droplets of the cooling tube fins to dehumidify.

NEW QUESTION 115
The surface cooler controls the indoor temperature and humidity through the heat exchange between the refrigerant and the indoor air.

NEW QUESTION 116
Through the query ____________, the user can understand the operation of the device.

NEW QUESTION 117
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 118
12V The battery is made of 6 indivual 2V It is composed of battery cells.

NEW QUESTION 119
The following are air-cooled row-level air conditioners ____________ .

NEW QUESTION 120
The actual work of the circuit breaker can reach several thousand amperes, and at the same time, it requires high segmentation capability and thermal stability. ____________

NEW QUESTION 121
Huawei monitoring system ECC800 The collector can be inserted at most ____________ A power supply module.

NEW QUESTION 122
UPS The functions are ____________ .

NEW QUESTION 123
The following air conditioners are comfortable air conditioners ____________ .

NEW QUESTION 124
When the battery is in use, sunlight can directly shine on the battery.

NEW QUESTION 125
DB9 It is an agreement.