![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
会议结束后,环境表面、地面须用()mg/L含氯消毒液进行消毒,作用30min后清水擦拭
A.250
B.500
C.1000
D.2000
E.5000
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、500
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.250
B.500
C.1000
D.2000
E.5000
B、500
A.500;30
B.1000;30
C.1000;15
D.500
A.1000,30,2
B.1000,30,1
C.500,30,2
D.500.30
A.500,30,1
B.1000,30,1
C.1000,30,2
D.1000,20,1
A.250~500
B.500~1000
C.2000~5000
D.5000~10000
A.1000;60;2000
B.2000;60;1000
C.2000;30;2000
D.2000;60
A.500:15
B.1000:30
C.5000:15
D.5000:30
A.20000 mg/L ;1:2
B.10000 mg/L;1:2
C.20000 mg/L ;1:1
D.10000 mg/L; 1:1
A.1000,喷洒;2000,擦拭
B.2000,擦拭;1000,喷洒
C.2000,喷洒;1000,擦拭
D.1000,擦拭;2000,喷洒