题目内容

从高处释放一个小球,恰好压在正下方竖直放置的轻弹簧上,在小球的加速度为零的时刻,未达最大值的物理量是

A. 动能
B. 重力的瞬时功率
C. 弹性势能
D. 动量

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存放固体烧碱,应使用

A. 集气瓶
B. 带橡皮塞的广口瓶
C. 带玻璃塞的广口瓶
D. 容量瓶

阅读理解:阅读下面的短文,根据文章内容进行判断,正确写“T”错误写“F”。
Hiring the right employee is a challenging process for a company. A bad hire not just wastes your time and money, but also impacts the team spirit and company morale. A good hire, however, pays you back in employee productivity, successful employment relationship, and business culture enhancement. Here are certain rules that you can use to select the right employee.
Design an effective advertisement. A clearly targeted ad attracts qualified candidates and discourages others. You can make your ad more effective with a precise and specific job description.
Ask the right job interview questions. The purpose of the interview is to find out if the candidate is a strong fit to your business. By using a sequence of particularly designed questions, you are able to get a true picture of your potential employee.
Check backgrounds and references. Background checking helps you reduce risks and improve the overall quality of hire. You need to verify that all the presented, credentials, skills, and experience are actually possessed by your candidate.
1. Hiring the wrong employee is expensive, costly to a company, and time consuming.{T、F}
2. A company has to spend a lot of money hiring a right employee.{T、F}
3. An advertisement with a clear target will make all candidates lose courage.{T、F}
4. Well designed interview questions can help you know more about the candidates.{T、F}
5. Work experience is one of the primary things for an employer to verify in background checking.{T、F}

做“互成角度的两个力合成”实验时,用两只弹簧秤分别钩住细绳套互成角度地拉橡皮条,使橡皮条与绳的结点伸长到某一位置O之后,要描下______,记录______。使用弹簧秤读数时,若弹簧秤的最小刻度为0.1N,且以牛为单位记录力的大小,则所记录的数据的小数点后面应该有______位数字。

()是教师生活的重要内容,也是衡量其工作生活质量的重要指标。

A. 教师幸福感
B. 收入的高低
C. 身体的健康

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