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There is a large amount of serous in the pleural cavity, which plays a lubricating role.
There is a large amount of serous in the pleural cavity, which plays a lubricating role.
A.正确
B.错误
正确答案：错误
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动物解剖生理
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The thorax is a truncated conical body cavity with the thorax as the frame and attached to the chest wall muscle and skin. The cavity can be enlarged and reduced with the help of pectoralis muscle group.
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The left and right pleural cavities of cattle and sheep are generally interlinked.