题海让大学四年没有难题
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题目详情

单选题 The cycle of _____ really begins when the phrenic nerves stimulate the diaphragm to contract and flatten

A. respiration

B. hematopoiesis

C. swallowing

D. emulsification

学科:医学专业英语

时间:2023-12-23 15:54:01

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