中、后纵隔的分界线为( )。
参考答案:食管
Shenzhou VII,______ country’s third manned spaceship, was launched successfully on September 25, 2008 in ______northwestern Gansu Province,China.
A.a;不填
B.the;the
C.the;不填
D.a;the
冠心病的临床分型除外()。
A.心律失常
B.猝死
C.心肌梗死
D.心绞痛
E.缺血性心肌病