多项选择题 An employee is usually dismissed from a job as a result of __________. A. unsatisfactory work performance B.  poor behavior or attitude that does not fit with the corporation’s culture C.  unethical conduct that violates the company’s policies

问答题 张紧轮与主动轮、从动轮在结构，功能方面有哪些区别？

单项选择题 when you're writing to someone who went out of their way for you ,people really appreciate （ ） letters.