This reflects the priority being attached to economic over political activity, partly caused by a growing reluctance to enter a calling blighted by relentless publicity that all too often ends in destroying careers and reputations.

A．powerfulness

B．unwillingness

C．renaissance

D．apologeticness

工人进入物料提升机的吊笼后，卷扬机抱闸失灵，防止吊笼追料的装置是（）。

A.停靠装置

B.断绳保护装置

C.通信装置

D.缓冲装置