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通常用风向和风速来表示风的状态。()

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Which of the following statements is NOT true according to the passage?

A. The growth of unconventional gas has a great impact on the US economy.
B. The "stranded" oil remains in the well as a result of a decline in oil pressure.
C. It is totally safe to believe that the world is now running out of the oil and gas.
D. Enhanced recovery techniques are being developed to improve oil recovery.

对家畜健康行为的剥夺一定比剥夺舒适行为对家畜的影响大。()

当动物休息于舒适的环境中时,其产热量决定于采食量。()

肛周瘘(名词解释)

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