If you must make an electricity connec

1、To extinguish an electrical fire, you

To extinguish an electrical fire, you should use （）.Amechanical foamBchemical foamCcarbon dioxideDsoda acid

2、When would you ground an electric hand

When would you ground an electric hand tool?（）AWhen it is a DC machineBWhen it is an AC machineCAny machine that operates on over 100 voltsDOnly when working on wet steel plate

3、If the electric motor driving an air c

If the electric motor driving an air compressor fails to start, the cause may be a （）.Aleaking unloaderBtripped circuit breakerCcontrol line leakDdefective pop valve

4、You must put the（）cargo this side, if

You must put the（）cargo this side, if any, and let me know later.AdamagedBdamageCdamaging

5、When fighting an electrical fire, you

When fighting an electrical fire, you should first （）.Astop ventilation to the areaBstop the vesselCsecure electricity to the circuitDapply CO2 to the fire

6、If you log a distress message，it must

If you log a distress message，it must include the（）.Asea stateBnames of witnessesCtime of its occurrenceDwind direction and velocity