确认合同当事人承担违约责任需同时具备以下条件( )。 A．有当事人不履行或不完全履

That was really a splendid evening. It's years ___ I enjoyed myself so much.[      ]

A. when    

B. that    

C. before    

D. since  

慢性骨髓炎，死骨形成，出现红、肿、热，应采用（）

A．死骨摘除术

B．切开引流术

C．骨钻孔引流术

D．开窗引流术

E．窦道切除术

Einstein liked Bose’s paper so much that he ________ his own work and translated it into

German.             [ ]

A. gave off    

B. turned down    

C. took over  

D. set aside

（）位于会阴深横肌上方。

A.盆膈上筋膜

B.盆膈下筋膜

C.尿生殖膈上筋膜

D.尿生殖膈下筋膜

E.会阴浅筋膜

原料蜂胶能吃吗？