题目内容

心输出量是指

A. 指每一分钟一侧心室射出的血量,简称心输出量
B. 指每一分钟心室射出的血量,简称心输出量
C. 指每一分钟一侧心房射出的血量,简称心输出量
D. 指每一分钟心房射出的血量,简称心输出量

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