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When the bearing becomes dry from lack of oil, the motor shaft may heat to ______ an extent ______ it welds itself to the bearing.
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The selection of an oil depends _____ on the operating conditions, the design of the engine and the type of fuel to be burned.
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The primary duty of lube oil is to reduce _____ between the working parts of an engine.A.p
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In cleaning up an oil spill, the use of straw or reclaimed paper fibers would be an exampl
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According to the news item, Abyei is______.A.an oil-rich regionB.a part of South KordofanC
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The selection of an oil from the _____ depends to a great extent on the operating conditio
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The ability of leukocytes to engulf bacteria is due to the process of _____.