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单选题
When the bearing becomes dry from lack of oil, the motor shaft may heat to （）an extent （） it welds itself to the bearing.
A
either；or
B
neither；nor
C
such；that
D
so；that
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lube oil strainer magnets bearingC
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lube oil pressure to the bearing
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reduce the wear of bearing surfacesB
cool the bearing surfacesC
assist in sealing bearing surfacesD
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the piston cooling oil return pipesB
the main and crankpin bearingsC
thrust and intermediate bearingsD
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