If the length of the connecting pipes between the indoor and outdoor units of the FusionModule800 air conditioner is less than how many meters, there is no need to charge refrigerant? (

• A.20
• B.50
• C.30
• D.10

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Which of the following is true about the micro-module and fire protection system? ()

• A.The building fire protection system can send fire signal to the computer room controller (ECC800)
• B.ECC800 controller can be linked with building fire
• C.When a fire alarm occurs in the channel, the computer room controller (ECC800) can send the signal to the building fire protection system
• D.ECC800 can control sunroof rollover

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Which of the following are the working modes of UPS2000-A-(1K-10K)? () (multiple choice)

• A.Battery Mode
• B.Static Bypass Mode
• C.Manual maintenance bypass mode
• D.Mains mode

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Suppose a certain battery specification specifies that the discharge power is 400W@ 1.67V @15min, and if the system demand is 1400W. Then the number of battery packs selected is ()

• A.4
• B.3
• C.5

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UPS000-E has reliable, efficient and simple design features, then which of the following statements about UPS5000-E-400/500K is true ( )

• A.UPS5000-E has two control units
• B.UPS voltage input range 138-485Vac
• C.UPS5000-E-400/500K built-in parallel components
• D.UPS5000-E-400/500K supports upwind

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