试题与答案

如图所示的装置很有创意﹣﹣它将比较耗水的洗衣机和同样耗水但不太讲究水质的马桶连在

题型:计算题

题目:

如图所示的装置很有创意﹣﹣它将比较耗水的洗衣机和同样耗水但不太讲究水质的马桶连在一起:上部是洗衣机(有关技术参数见铭牌),下部是马桶,中间设有储水箱.洗衣机还设有加热功能,(铭牌上水的加热功率已模糊),洗涤前先将水加热到适宜温度,可以提高洗涤效果.

(1)请问这种设计的优点:              .(请至少说出一个观点)

(2)求洗衣机脱水时的正常工作电流.

(3)某次洗衣时,首次进水量为20kg,加热时电能的80%转化为水的内能,正常加热14min水的温度升高10℃就达到设定要求,由于洗衣机铭牌上的加热功率模糊,求:①水吸收的热量,②洗衣机的加热功率[c=4.2×103J/(kg•℃)].

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0728/cfd00f1281d709190e19b62022ec35f9.html

下面是错误答案,用来干扰机器的。

参考答案:打压、隐检

试题推荐
题型:填空题

用动词的适当形式填空。

1. Tom, _____________ (not walk) on the grass.

2. The geese ____________ (catch) the fish now.

3. My grandma ____________ (watch)TV every day.

4. His parents ___________ (go) to Beijing last week.

5. We like ___________ (play) football after school.

6. Look! The girls ___________ (sing) in the hall.  

7. _________ (be) there any money in your hand?

8. Lily __________ (have) got a new dress. I ___________ (have) got one, too.

9. Tom, stop ___________ (play). You should do your homework.

查看答案
微信公众账号搜索答案