当室内热环境评价指标PMV＝0时，总体热适中。可能的对热环境不满意的人员百分数PPD为( )。
A．0
B．5%
C．10%
D．15%
参考答案：B
仔细阅读课本P8 的课文，回答下列问题。
1. Who wrote this letter?
______________________
2. When did Jenny write the letter?
3. Who is Danny’s new friend?
4. Whose parents work in a restaurant?
5. Did they play football after school?
可为缺铁性贫血患者提供较多铁的食物为（）
A.牛奶
B.猪血
C.胡萝卜
D.马铃薯
E.橙子
