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Wires that are installed in air returns above a ceiling must be（）
- A、fire proof
- B、fiberglass coated
- C、plenum rated
- D、teflon coated
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单选题这些绑扎工具必须要再次上紧。（）A
These lashing tools must be tightened again.B
These lashing wires must be tightened again.C
These lashing bars must be secured again.D
These cargo wires must be loosened again.
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单选题Which of the following is the MOST likely cause of a low wireless signal after an internal wireless adapter on a laptop was replaced?（）A
The wireless card must be calibrated to the laptop.B
The correct preshared encryption key must be installed to boost the signal.C
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The antenna wires for the wireless card were not attached.
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the name of the person conducting the testB
the weight of the chargeC
recommendations for the next testD
All of the above
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