MCB Circuit breakers can be divided into different tripping characteristics B, C, D, Z, K Level, for IT For
load, you should use ____________ class Tripping characteristics.
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.
In the air conditioning system, the function of the oil and gas separator is to separate the lubricating oil from
the compressor exhaust and return the separated lubricating oil to the compressor.
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.