1.某人打靶时连续射击两次,事件“至少有一次中靶”的对立事件是-湖北继续教育网网校

首页

普通专升本

成人高考

学位英语

在线刷题

最近学习

最近学习课程

暂无数据

您现在位置：模拟考场> 湖北自学考试> 专业课> 概率论与数据统计（经管类）> 浏览试题

[单选题]1.某人打靶时连续射击两次,事件“至少有一次中靶”的对立事件是

A“两次都不中靶”

B“两次都中靶”

C“只有一次中靶”

D“至多有一次中靶”

收藏查看答案

相关题目

热门试题

1.
2. 9.OSI参考模型按功能将网络划分为7层，其中最上层（第7层）是
3. 12.对数据库系统局部数据的逻辑结构进行描述的是
4. Sometimes I scratch my head when I read about the government' s efforts to improve schoo1s:new standards and tests to be applied, strict teacher evaluations, and threats of school closures and job losses. They frighten the school employees, not to mention the students. Instead of making people unable to solve problems or try new ideas-- which is what fear does to us-- research on school reform strongly suggests that policy -makers should encourage school leaders to take a more humane approach. In their study on the reform efforts of twelve Chicago public schools, Bryk and Schneider found that enabling positive social relationships between the adults was the key to successful school improvement and that trust was at the heart of those relationships.Trust in schools comes down to one thing:psychological safety or safety to speak one' s mind, to discuss writh openness and honesty what is and isn’t working, to make collective decisions.Yet this kind of safety doesn' t come easily to schools. According to Bryk and Schneider, the adults in school rely on each other to do their jobs correctly and with integrity (正直). The challeage is that our expectations are very diverse based on our unique backgrounds.At one school where I taught, each teacher had different expectations about hew much effort teachers should put into their work- -a big difference between the teachers who left af the 1ast bell and those who worked into the evening. And when expectations are uncoasci or unspoken, it becomes impossible for others to live upto them.We also make assumptions about the intentions behind a person’s behavior. As we a1l Imam, assumptions are often wrong. For example, parents and teachers my think the principal taml particular decision based on his career advancement rather than hat" s best for the studeata. don' t feel psychologica1ly safe to question our ssumptions and e aecmtiatm, trust itiea am the window and our relationships suffer.
5. 22.公务员甲经常不来上班，单位遂给予甲处分。对此表述正确的是

热门试卷