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【单选题】
预防外源性哮喘发作最重要的措施是A.
监测病情
B.
避免呼吸道感染
C.
应用支气管舒张剂
D.
避免接触过敏源
E.
坚持长期服药
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反馈参考答案：
举一反三
【单选题】取天麻粉末1g,加水10ml浸渍4h,时时振摇,过滤。滤液加碘试液3滴显
A.
黄色或黄绿色
B.
橙黄色或黄棕色
C.
.淡紫色或紫红色
D.
紫红色至酒红色
E.
蓝色或蓝绿色
【单选题】What conclusion may you draw on seeing the page with the “chicken” article ?
A.
This “article” is probably written by a scholar who tried to show people how a research article was organized.
B.
This “article” is probably written by a student who wanted to make fun of words.
C.
This “article” is probably found in an academic journal which is about the study of chickens.
D.
This “article” is probably found in an academic journal which is about the study of vocabulary.
【单选题】What conclusion may you draw on seeing the page with the “chicken” article ?
A.
This “article” is probably written by a student who wanted to make fun of words.
B.
This “article” is probably written by a scholar who tried to show people how a research article was organized.
C.
This “article” is probably found in an academic journal which is about the study of chickens.
D.
This “article” is probably found in an academic journal which is about the study of vocabulary.
【单选题】What may NOT be included in a conclusion of an exploratory writing?
A.
Restate the problem you explored.
B.
Form a transition into your next source.
C.
Highlight some possible solutions.
D.
Discuss the questions about the problem.
【简答题】线电压为380V的三相对称电源，给一组三角形连接的对称负载供电，已知每相负载的电阻 ，电抗 ，求各相负载相电流及线电流有效值。
【简答题】What is the possible conclusion of the article?
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