病理状态下才能于X线片上见到其影像的是()
A.骨皮质
B.骨膜
C.骨髓腔
D.骨小梁
E.以上都不是
参考答案:B
With a lot of difficult problems_____, the newly-elected manager is in a dilemma.
A.settled
B.settling
C.to settle
D.being settling
论述通过第三方代理机构的银行卡支付的业务流程。