When the maintenance engineer arrives at the customer site, the working environment around the site should be recorded. The main collection items are (). (Multiple choice)

When the maintenance engineer arrives at the customer site, the working environment around the site should be recorded. The main collection items are (). (Multiple choice)
A . Ventilation
B . Ambient temperature
C . Equipment installation distance
D . If there is a bad environment around it (such as dust or moisture)

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Answer: ABCD