“强制性”造句

所有骑摩托车的人都必须戴头盔，这是强制性的。
It is compulsory for all motorcyclists to wear helmets.

工人董事的任命是不是强制性的?
Is the appointment of worker - directors to be mandatory?

此事已通过强制性仲裁得到解决.
It was settled by compulsory arbitration.