问题
单项选择题
通风就是利用库存内外空气温度不同而形成的气压差，使库存内外空气形成对流，来达到调节库存内温湿度的目的，但风力不能大过（）级。
A、4
B、5
C、6
D、7
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
通风就是利用库存内外空气温度不同而形成的气压差，使库存内外空气形成对流，来达到调节库存内温湿度的目的，但风力不能大过（）级。
A、4
B、5
C、6
D、7
参考答案：B
When I was young,I liked to play jokes on people I knew,especially on my parents and friedns.One day my mother was 46 and I was playing with my younger brother Tony. Suddenly I ran to my mother and said,“Tony fell from the open window!”She was very 47 and ran out of the kitchen.Then I said,“Don’t worry,I’m just 48 .”And my mother shouted at me,“If you do it 49 ,I’ll hit you.” One day I went swimming with my 50 in the sea.I wanted to play a joke on them.In the beginning,I went swimming 51 ,and I called out,“Help!”All my friends came to help me,only to 52 that I was joking.But the next time I wasn’t joking.I was so 53 that I swam in deep water. I tried my best to call my frineds for help,but this time nobody came to help me. 54 ,They found I was telling the truth.They came and saved my life.They took me to the hospital.This is the best 55 in my life.From then on,I haven’t joked on anyone.
|