be expected to do和be exposed to do区别如下：
Be expected to do sth被期望做某事; 应该做某事
例句：
1.Even if housekeeping chores aren't listed in your job description, you will be expected to do them from time to time.
尽管你的
工作职责并不包含琐碎的事情，但你也需要时常去做这些事情。
2.While you can impose upon your contacts to do favors for you, you will also beexpected to do favors for them when necessary.
当你求助于你的关系网的时候，他们也期待你给予必要的回报。
3.After applying the hotfix referenced in KB article 828026, some URL script commands do not fire even though they would be expected to do so.
在应用了第828026号
知识库文章中所涉及的热修复后，播放器出现了一些本应该引发的URL脚本命令却没有引发的问题。
be exposed to do sth暴露于做某事
例句：
1.Running the command: javadoc @tocdoclet @options @packages @removefiles — remove all the classes that you do not want to be exposed (Listing 4).
运行命令：javadoc @tocdoclet @options @packages @removefiles —— 移除所有您所不希望被显示的类（列表 4）。
2.The Chimneys had been already visited by the sea, under circumstances which are known, and it would not do to be exposed again to a similar accident.
这有助于你一点点敞开心怀，而不至于将自己置于那些对你不怀好意的人的目光之下，或者让自己面对那些你不敢开口求助的人。