DCE SET 2

U is an important measurement unit used for an IT cabinet. How long does 1 U equal?

• 44.45 mm
• 46.45 mm
• 45.44 mm
• 45.46 mm

Which aspect of data center products do customers most focus on usually?

• Availability
• Cost
• Appearance
• Easy operation and maitenance (O&M)

Which device in a smart module has the strictest requirement on the loading capacity of floors?

• IT cabinet
• Uninterruptible power system (UPS) cabinet
• Battery cabinet
• Network cabinet

What transportation requirements should Huawei's present smart modules meet?

• Land transportation
• Sea transportation
• Air transportation
• Sea transportation and land transportation

Which of the following methods cannot be used to check the airtightness of air conditioners?

• Perform a leakage test under positive nitrogen pressure
• Perform a leakage test under negative vacuum pressure
• Perform a leakage test with a halogen leak detector
• Perform a leakage test under positive oxygen pressure

How do you adjust the cooling capacity of a chilled water air conditioner?

• Adjust the water flow rate through a 2- way valve
• Adjust the water flow rate through a 3-way valve
• Adjust the fan speed
• All the above

Which of the following is not the unit of ventilation?

• CFM
• m3/h
• m3/s
• W/m2K

What is the core component that drives refrigerant to flow in the cooling cycle of an air conditioner?

• Compressor
• Evaporator
• Condenser
• Throttle

When the dry-bulb temperature is fixed, which of the following cannot reflect the water vapor content in the air?

• Humidity ratio
• Partial pressure of water vapor
• Wet-bulb temperature
• Partial pressure of saturation vapor

After the emergency power-off (EPO) switch on the UPS is pressed, which of the following statements is true?

• The UPS switches to normal mode
• The UPS switches to bypass mode
• The UPS switches to battery mode
• The UPS does not supply power and the output fails