In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to （）crankcase.<br>A:supply clean air to the measuring compartment of the units for more accuracy<br>B:generaate the pressure required for the extraction of the oil mist from the<br>C:generate the pressure required for the extraction of the oil mist from the crankcase<br>D:supply clean air to the measuring track of the units for more accuracy

In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to （）crankcase.
A:supply clean air to the measuring compartment of the units for more accuracy
B:generaate the pressure required for the extraction of the oil mist from the
C:generate the pressure required for the extraction of the oil mist from the crankcase
D:supply clean air to the measuring track of the units for more accuracy

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