心脏后前位X线片心脏阴影向两侧增大，心缘弧度消失呈烧瓶状是(

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问题单项选择题

心脏后前位X线片心脏阴影向两侧增大，心缘弧度消失呈烧瓶状是( )

A．肺源性心脏病
B．心肌病
C．二尖瓣狭窄
D．心包积液
E．高血压性心脏病

答案

参考答案：D

选择题

With a lot of difficult problems_____, the newly-elected president is having a hard time.

A．settled

B．settling

C．to settle

D．being settling

判断题

财产租赁合同没有期限限制。( )