单选题When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.Afilter to remove the fuel oilBuse the settler to remove the fuel oilCremove the fuel oil by centrifugingDdrain and then renew the lube oil supply
单选题
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
A
filter to remove the fuel oil
B
use the settler to remove the fuel oil
C
remove the fuel oil by centrifuging
D
drain and then renew the lube oil supply
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