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问题 多项选择题

移动式压力容器的充装介质包括（）

A、压缩气体

B、高（低）液化气体

C、冷冻液化气体

D、高于或等于标准沸点温度的液体

答案

参考答案：A, B, C, D

阅读理解
阅读理解

       Hello! I'm Xiaoxin. Do you know where I am from? Yes, I'm from Japan. I'm bright(聪明的). I'm
five. I'm in Class Nine. My phone number is 6296-7341.


       Good evening! My name is Mickey. I'm from the USA. I'm ten years old.  Do you like(喜欢) me?
Now I'm in Hong Kong(香港). My QQ number is 63527198.



        Nice to see you. I'm Panda. Can you spell it? Yes, P-A-N-D-A, panda. I'm in Sichuan, China. I'm
four years old. I'm fine now. My telephone number is 15139748856. Welcome to China!
1. How old is Xiaoxin?  
A. Four.          
B. Five.            
C. Nine          
D. Ten.
2. What's Mickey's QQ number?
A. 63527198.    
B. 62967198.        
C. 62967341.      
D. 15139748856.
3. Who are in China now?
A. Xiaoxin and Mickey                
B. Xiaoxin and Panda                  
C. Xiaoxin and Ne Zha                
D. Mickey and Panda
4. The panda is from _________.
A. Japan            
B. China              
C. England        
D. the USA
5. Panda means(意思是) "_________".
A. 蜡笔小新         
B. 米老鼠          
C. 大熊猫          
查看答案
单项选择题

牙槽骨修整的最佳时间为拔牙后

A．3个月

B．1个月

C．即刻修整

D．5个月

E．6个月
查看答案