首次通过法显像,右房显影后,左房左室立即显影,是由于()
A.右房至左房分流
B.左房至右房分流
C.三尖瓣反流
D.肺动脉瓣反流
E.主动脉瓣反流
参考答案:A
It was the very place _________ the soldiers fought over sixty years ago.
A.that
B.which
C.where
D.there
调酸辣味时,一般调料在______投放比较合适。
A.烹调前
B.烹调中
C.成熟后
D.装盘后