问题
多项选择题
道路货物运输经营者应当加强对从业人员的（），确保道路运输安全。
A．安全教育
B．专业技能教育
C．职业道德教育
D．素质教育
答案
参考答案：A, B, C, D
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道路货物运输经营者应当加强对从业人员的（），确保道路运输安全。
A．安全教育
B．专业技能教育
C．职业道德教育
D．素质教育
参考答案：A, B, C, D
| 根据语境，填写适当的词语或句子，补全对话。 Tina: I have never been late for school. But yesterday morning... John: __1__? Tina: Well, first of all I overslept. John: Did you have an alarm clock? Tina: Yes, but 2 . By the time I got up, my brother had already gotten in the shower. John: Oh, what a pity! Tina: So, after he got out of shower, I took a quick shower and got dressed. But __3__ I went outside, the bus had already left. John: Oh, no! How did you go to school? Tina: I ran all the way to school. But when I got to school, 4 I had left my backpack at home. John: You must be late for class? Tina: __5__. I got to school very late. I made an apology to my teacher. John: No wonder you look stressed out. |
当x→0时，lncosx2是比xnf(x)高阶的无穷小，而xnf(x)是比
高阶的无穷小，则正整数n等于()。