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问题 判断题

皮肤粘膜开放性伤口，无明显红肿痛热。但从渗出物中培养出金黄色葡萄球菌，应列为医院切口感染。

答案

参考答案：错

选择题

NA力阿伏加德罗常数，下列叙述正确的是

A．1mol苯含有的C=C键数为3NA

B．1mol Na2O2与水完全反应时转移的电子数为NA

C．含NA个Na+的Na2O溶解于1L水中，Na+浓度为1mol·L-1

D．1mol O2和2mol SO2在密闭容器中充分反应后的分子数等于2NA
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补全对话，情景问答
从Ⅱ栏中选出Ⅰ栏中相对应的答语。
                            I                                            
( )1. Would you mind putting your things away? 
(     )2. When will the race begin?                
(     )3. How often do you play football?          
(     )4. Can I speak to Mary, please?             
(     )5. Thanks for your delicious food.           		            Ⅱ                                    
A. Twice a week.                         
B. Hold the line, please.                                                 
C. At a quarter to ten, I think.         
D. You are welcome.                       
E. Sorry, I'll do it in a minute.    
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