题目内容
（请给出正确答案）
The major source of chemical contaminants in hydraulic fluid is _____.
A.microscopic steel shavings
B.abrasive waste
C.anti-oxidant compounds
D.oxidation by-products
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A、Behaviorist theory
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B、increased stimulation of the volume and osmoreceptors, and decreased ADH secretion
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D、decreased stimulation of the volume and osmoreceptors, and decreased ADH secretion
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