問題1
The role of Huawei chilled water air conditioner chassis power supply is to provide a stable fan power supply.
The role of Huawei chilled water air conditioner chassis power supply is to provide a stable fan power supply.
正確答案: B
問題2
In battery construction, the ( ) component functions can discharge excess gas.
In battery construction, the ( ) component functions can discharge excess gas.
正確答案: B
問題3
Under what circumstances UPS will work in static bypass mode?
Under what circumstances UPS will work in static bypass mode?
正確答案: C
問題4
When the sunroof actuator senses a smoke alarm, it can not control the flip sunroof to open automatically.
When the sunroof actuator senses a smoke alarm, it can not control the flip sunroof to open automatically.
正確答案: A
問題5
( ) component can complete the DC to AC conversion.
( ) component can complete the DC to AC conversion.
正確答案: A
問題6
Gas fire protection systems are fire extinguishing systems that inject gas (including steam, aerosol) as a fire extinguishing medium.
Gas fire protection systems are fire extinguishing systems that inject gas (including steam, aerosol) as a fire extinguishing medium.
正確答案: B
問題7
The following ( ) is the correct description of 6 fixed VRLA single battery series. The rated capacity is 150Ah.
The following ( ) is the correct description of 6 fixed VRLA single battery series. The rated capacity is 150Ah.
正確答案: C
問題8
High sensible heat ratio is the only difference between a precision air conditioner and a residential air conditioner.
High sensible heat ratio is the only difference between a precision air conditioner and a residential air conditioner.
正確答案: A
問題9
Protective grounding: grounding refers to the direct connection with the earth, electrical installations or electrical parts of the live part of a point connected with the earth, electrical installations or other devices are not charged part of the normal point of the earth and man-made connection.
Protective grounding: grounding refers to the direct connection with the earth, electrical installations or electrical parts of the live part of a point connected with the earth, electrical installations or other devices are not charged part of the normal point of the earth and man-made connection.
正確答案: B
問題10
（) Which of the following start then the alarm emits a strong sound and light alarm signal to remind the scene of the purpose of attention?
（) Which of the following start then the alarm emits a strong sound and light alarm signal to remind the scene of the purpose of attention?
正確答案: A
問題11
Environmental refrigerant R410a refrigeration performance better than non-environmental refrigerant R22.
Environmental refrigerant R410a refrigeration performance better than non-environmental refrigerant R22.
正確答案: A
問題12
The basic principle of runner dehumidifier is that the water vapor runs into cooling copper tube fins forming water droplets and dehumidification.
The basic principle of runner dehumidifier is that the water vapor runs into cooling copper tube fins forming water droplets and dehumidification.
正確答案: A
問題13
Lay anti-static floor, put on anti-static shoes and socks to prevent the formation of ( ).
Lay anti-static floor, put on anti-static shoes and socks to prevent the formation of ( ).
正確答案: B
問題14
Which of the following does not belong to the protocols?
Which of the following does not belong to the protocols?
正確答案: B
問題15
12V battery consists of 6 2V battery cells.
12V battery consists of 6 2V battery cells.
正確答案: B