关于防暑降温费，下列说法正确的是（）。A.高温岗位人员标准300元，非高温岗位人员标

已知命题p：∀x∈R，x²+1＞0．则¬p是______．

阅读下面短文，根据以下要求：1）括号内汉语提示；2）该词首字母提示；3）上下文语境提示,在每个空格内填入一个适当的英语单词使短文通顺，所填单词要求拼写正确，形式符合英语表达习惯。（请将答案抄到答案卷上）

I’m glad to hear ___1___you. I know you’re dying to h___2___ about my life here. I’m still trying to adapt ___3____ the conditions here. The other days I visited a ___4____(偏远的)village with another teacher. We walked for two and a half h____5___ to get there. We s___6___a day in the home of Tombe, one of my students。The hut was d___7___ inside so it took time for my eyes to adjust. We also had a meal there. I don’t speak much of the __8___(当地的)English dialect yet, so I could not _____9______(参加) in their conversation. Luckily, Tombe could act as our interpreter. We left the village the next morning. It was  s__10__ a privilege to have spent a day with Tombe’s family.

简述合同中数量条款的基本内容。

再挂失的挂失事项与原挂失不同。

某高校计算机系开设有网络课并安排了上机实习，假设机房共有2m台机器，有2n名学生选修该课，规定：
(1)每两个学生组成一组，各占一台机器，协同完成上机实习。
(2)只有一组的两个学生到齐，并且此时机房有空闲机器时，该组学生才能进入机房。
(3)上机实习由一名教师检查，检查完毕，一组学生同时离开机房。
试用P、V操作模拟上机实习过程。