灾害事故中的重大事故是如何界定的?
参考答案:
重大事故是指:伤病人数10人以上或死亡3人以上(或涉及外籍公民和有社会影响人士),事故基本得到控制,伤亡人数基本不再增加。
David can't go to take part in the sports meeting, because he'll ________ take care of his mother
who is ill. [ ]
A. must
B. has to
C. have to
D. needs to
试用期满后员工欲主动解除劳动关系辞职时应提前()天向公司递交书面的()。