6个十,5个一是( ),8个一,4个十是( )。
65;48
A goodbye party was held to _______ his 30 years’ service to the army.
A.celebrate
B.determine
C.match
D.purchase
右心房()
A.是心腔中最靠右侧的部分
B.前部为腔静脉窦,后部为固有心房
C.两部在腔面以界沟为界
D.腔静脉窦壁内有许多平行的梳状肌
E.冠状窦开口于固有心房