室内空气监测采样点数量的确定,应根据监测室内房间的数量和现场情况而确定,以便能正确反映室内空气污染物水平。
参考答案:错
解析:应根据监测室内面积大小和现场情况而确定。
根据句意及首字母或汉语提示完成单词。
1. Mary c______ her room every morning.
2. Jack, some one is w______ for you outside the door.
3. Do you have a c______? I want to take some photos.
4. The sun goes up in the east and goes down in the ______(西方).
5. There are lots of ______(鸟) in the tree.
Internet上使用的邮件通信协议的是:()。
A.STMP
B.MIME
C.POP3
D.FTP