A . 4~6m2
B . 2~4cm2
C . 3~4cm2
D . 1~2cm2
E . 6~8cm2
[单选题]正常二尖瓣开口面积为A.4~6cm2B.2~4cm2C.3~4cm2D.1~2cm2E.6~8cm2
[单选题]正常二尖瓣开口面积为A.4~6㎡B.2~4c㎡C.3~4c㎡D.1~2c㎡E.6~8c㎡
[单选题]正常二尖瓣开口面积为A.4~6㎡B.2~4c㎡C.3~4c㎡D.1~2c㎡E.6~8c㎡
[单选题]正常二尖瓣开口面积为A.4~6㎡B.2~4c㎡C.3~4c㎡D.1~2c㎡E.6~8c㎡
[单选题]正常二尖瓣开口面积为A.4~6㎡B.2~4c㎡C.3~4c㎡D.1~2c㎡E.6~8c㎡
[单选题]正常二尖瓣瓣口面积为A.2~4cm2B.4~6cm2C.6~8cm2D.8~10cm2E.10~12cm2
[单选题]正常二尖瓣瓣口面积为A.2~4cm2B.4~6cm2C.6~8cm2D.8~10cm2E.10~12cm2
[单选题]正常二尖瓣口面积为()A . 1~2cmB . 2~3cmC . 3~5cmD . 4~6cmE . 6~8cm
[单选题]正常二尖瓣口面积为()。A . 1~2cm2B . 2~3cm2C . 3~5cm2D . 4~6cm2E . 6~8cm2