问题
多项选择题
厂呼吸道感染的常见因素为
A．免疫机能受损
B．正常菌群失调
C．病原体的飞沫传播
D．空调系统污染
E．致病菌通过气道逆行感染
答案
参考答案：A,B,C,D,E
搜题请搜索小程序“爱下问搜题”
厂呼吸道感染的常见因素为
A．免疫机能受损
B．正常菌群失调
C．病原体的飞沫传播
D．空调系统污染
E．致病菌通过气道逆行感染
参考答案：A,B,C,D,E
| 情景搭配。 | |
| ( ) 1. What are you going to do? ( ) 2. May I speak to Helen? ( ) 3. What's the weather like in spring? ( ) 4. What's your favourite holiday7 ( ) 5. How can I get to the post office? ( ) 6. What's wrong with you? ( ) 7. Whose bag is bigger, yours or mine? ( ) 8. How far is it from here? ( ) 9. How old are you? ( ) 10. How many stops are there? | A. Yes, speaking. B. It's about two kilometres away. C. Halloween. D. Forty. E. I've got a bad cold. F. It's warm and windy. G. Take bus No.5. H. Only two. L. We are going to have a picnic. J. Yours is, I think. |