搜题请搜索小程序“爱下问搜题”
问题 问答题 简答题

运7飞机座舱压力调节规律？

答案

参考答案：

自由通风阶段：低空500m以下。等压阶段：中空500m至3500m。等余压阶段：高空3500m至6000m。

多项选择题

Guillain-Barre综合征的治疗包括（）

A.肾上腺皮质激素

B.大剂量免疫球蛋白

C.血浆交换疗法

D.环磷酰胺等免疫抑制剂

E.呼吸困难可用人工呼吸机
查看答案
改错题
短文改错
        此题要求改正所给短文中的错误，对标有题号的每一行作出判断：如有错误（每行只有一个错误），则改正。
                                                                                                                                                                        
     When we feel sad or happy, a good cry is hardly   
impossible to resist. And do you know why we will cry?
Experts have found that tear contain some chemicals  
like hormone. When one is feeling stressed, it set free, 
tears will come down. So crying is a way of get  
rid of the stress and you will often feel good after a  
good cry. Of course gender(性别)has something to do with it
Women cry more often just because of they have more 
of this hormone than men. But next time you feel like
bursting into tears, go ahead. It do good to your health.  		1.          
2.          
3.          
4.          
5.          
6.          
7.          
8.          
9.          
10.        
查看答案