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【简答题】
考虑无限大平板两面加热(或冷却)的过程,问什么情况下可按分析处理?什么情况下可按半无限大体分析处理?
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反馈参考答案：
举一反三
【单选题】We are proud of our hometown, which is in coal and natural crystal（水晶石）.
A.
abundant
B.
universal
C.
remote
D.
autonomous
【单选题】China has made great ___in science and technology these years.We are proud of our country.
A.
differences
B.
achievements
C.
agreements
【简答题】法国约有%的人口信奉__。
【单选题】We are proud of our country. The year 2019 is her ________ birthday.
A.
seventy
B.
the seventy
C.
seventieth
D.
the seventieth
【单选题】We are proud of our achievements.
A.
performances
B.
actions
C.
records
D.
accomplishments
【单选题】We are proud of our country. The year 2019 is her __________ birthday.
A.
Seventy
B.
the seventy
C.
the seventieth
D.
seventieth
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