It has been that some government leaders _____ their authority and position to get illegal profits for themselves that resulted in the opposition in Thailand..

A．abuse

B．take

C．employ

D．overlook

压缩机防止制冷剂及润滑油向外泄漏或空气渗入的是（）

A、高压阀

B、活塞环

C、主轴承

D、轴封