-Why do you suggest we buy a new machine?

-Because the old one has been damaged          . [ ]

A.beyond reach

B.beyond repair

C.beyond control

D.beyond description

甲状腺功能障碍的心律失常病人禁用

A．普萘洛尔
B．胺碘酮
C．普罗帕酮
D．奎尼丁
E．普鲁卡因胺