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One question per day; no prize for correct answers, it’s just for entertainment

2019-11-04View Original

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4. Calcium-based greases possess (?????) properties. ?A. Heat resistance??B. Water resistance??C. Heat dissipation? The correct answer to a question yesterday was A. The fitting reference for the outer ring of a rolling bearing and the bearing housing should be (?A?). ?A. Base shaft system??B. Base hole system??C. Non-standard system

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