问题
单项选择题
关于肺动脉的叙述，正确的是（）。
A.位于主动脉之后
B.进入心脏处有三个半月瓣
C.运送含氧量高的血液
D.含静脉血
E.起自右心房
答案
参考答案：D
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关于肺动脉的叙述，正确的是（）。
A.位于主动脉之后
B.进入心脏处有三个半月瓣
C.运送含氧量高的血液
D.含静脉血
E.起自右心房
参考答案：D
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