单选题In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to （）crankcase.Asupply clean air to the measuring compartment of the units for more accuracyBgeneraate the pressure required for the extraction of the oil mist from theCgenerate the pressure required for the extraction of the oil mist from the crankcaseDsupply clean air to the measuring track of the units for more accuracy
单选题
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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