搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1/A2型题

甲型肝炎传染性最强的时期是 （）

A.潜伏期早期

B.潜伏期晚期和黄疸前期

C.黄疸期

D.恢复期

E.潜伏期中期

答案

参考答案：B

多项选择题

根据水灭火系统工程量计算规则，末端试水装置的安装应包括（）。

A.压力表安装 

B.控制阀等附件安装 

C.连接管安装 

D.排水管安装
查看答案
补全对话，情景问答
根据所给问题选择正确的答语，并将其字母序号填在问句前面的括号内。
( ) 1. Would you like some bananas?                
(     ) 2. May I look at your pictures?             
( ) 3. What did you do yesterday?               
(     ) 4. Did you go to the Palace Museum yesterday?
(     ) 5. What is Jenny doing?                       		A. No. I didn't. I went home yesterday.    
B. I did my homework yesterday.              
C. Yes, please.                               
D. No, thanks.                            
E. She is writing a letter to her father.  
查看答案