题干

有一支温度计,表面刻有150格均匀的刻度.将该温度计的玻璃泡放在冰水混合物中,温度计内液面上升到第30格处;将它放到1标准大气压下的沸水中,液面上升到第80格处.则:

(1)该温度计的分度值是多少?

(2)第100格处表示的温度是多少?

(3)该温度计的刻度范围是多少?

上一题 下一题 0.0难度 选择题 更新时间:2018-04-28 03:59:05

答案(点此获取答案解析)

解:(1)因为1标准大气压下沸水温度为100℃,冰水混合物温度为0℃,
所以该温度计的分度值为:100ℂ8030
°
-
=2℃.
(

同类题5

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

    It's normal that people sometimes feel nervous. Everybody gets stressed from time to time.____ Some ways of dealing with stress 一like screaming or hitting someone一don't solve (解决),much. But other ways, like talking to someone you trust, can lead you to solving your problem or at least feeling better.

    Four steps for fighting stress, try taking these four steps, the next time you are stressed:

1) Get support. When you need help, reach out to the people who care about you. Talk to “trusted adult, such as “parent or other relatives. ____ They might have had similar problems, such as dealing with a test, or the death of a beloved pet.

2) Don't take it out on yourself. Sometimes when kids are stressed and upset they take it out on themselves. Oh, dear, that's a good idea. Remember that there are always people to help you. Don't take it out on yourself. ____

3) Try to solve the problem. After you're calm and you have support from adults and friends, it's time to get down to business. ____ Even if you can't solve it all, you can solve a piece of it.

4) Be positive. Most stress is temporary(暂时的).Remember stress does go away, especially when you figure out the problem and start working on solving it. These steps aren't magic, but they do work. And if you can stay positive as you make your way through a tough time, you'll help yourself feel better even faster.____

A. Ask for a helping hand to get you through the tough situation.

B. Notice your friends' feelings and find a way to help them.

C. Different people feel stress in different ways

D. Ah, it feels so good when the stress is gone.

E. You need to figure out what the problem is.

F. And don't forget about your friends.

G. Then, find a way to calm down.