responsibility可數(shù)嗎

　　例句：

　　He accepts full responsibility for what happened.

　　他承認(rèn)對所發(fā)生的事負(fù)完全責(zé)任。

　　Nobody has claimed responsibility for the bombing.

　　沒有人聲稱對爆炸事件負(fù)責(zé)。

　　She wants a job that gives her more responsibility.

　　她想得到一份責(zé)任更大的工作。