工业上的换热方法有（）；（）、蓄热式、热管。
参考答案：间壁式、混合式
根据句子内容和所给的音标，填写一个适当的词。
1. It takes about fifteen ______ /minit/ by car.
2. He was ______/il/ yesterday.
3. Canada is in ______ /n/America.
4. The old woman ______/di`pend/ on her daughter two years ago.
5. Don't ______ /wri/ about me. I'm OK now.
伤寒皮疹的特点有（）
A.多见于病程第7～13天
B.直径2～4mm
C.多在10个以上，分批出现
D.多分布于胸腹部
E.多在2～4天内消退
/America. 
ri/ about me. I'm OK now.