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单选题 When forcefully exhaling, the respiratory muscles that contract and play a major role are _______

A. external intercostal muscles and diaphragm

B. External intercostal muscles and abdominal muscles

C. inferior oblique muscle and sternocleidomastoid muscle

D. abdominal muscles and pectoral muscles

《研究生英语》课程封面

学科:《研究生英语》

时间:2025-08-24 04:10:23

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