风湿性心脏病二尖瓣病变时肺血管的改变是()
A.肺充血
B.肺出血
C.肺淤血
D.肺栓塞
E.肺缺血
参考答案:C
–Peter, I’d like to have a talk with you tonight.
– ______. Have what with me?
A.You’re welcome.
B.Thanks.
C.Yes, please.
D.Sorry?
只存在一个管板的换热器为()。
A.浮头式
B.固定管板式
C.u形管式
D.填料函式