Older workers tend to have more practical knowledge andexpertise as compared to their young counterparts, which comes as handier.
这里which指什么？comeas是一种搭配吗？如何理解？谢谢!
which 指代 morepractical knowledge and expertise，practicalknowledge and expertise 被视为不可分割整体，故 comes 用单数。come ashandy 似为 come in handy 之误，后者 = come in useful ，二者均为习语，意为 be useful when needed. 早晚会有用的。
