题目内容
What muscles are located between the ribs?
查看答案
搜索结果不匹配？点我反馈
更多问题
The ease with which one can expand the lungs and thorax is called_________
_________ causes an increase in the oxygen level and a decrease in the carbon dioxide level of the blood, a condition called hypocapnia(低碳酸血症).
_________is an infectious disease caused by the bacillus(芽孢菌属的) Mycobacterium_________ (结核分枝杆菌).
Respiration is centrally regulated by the
微信支付 
支付宝支付