潮气量、补吸气量与补呼气量之和为（）
A.肺活量
B.时间肺活量
C.每分通气量
D.肺总量
E.肺泡通气量
参考答案：A
Alexander tried to get his work __________in the medical circles.
A．to recognize
B．recognizing
C．recognize
D．recognized
门的功能分类有那些？
