凝汽器的结构特点是什么?

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问题:

凝汽器的结构特点是什么?

考点:热力发电厂机炉电考试机炉电考专业篇机炉电考专业篇题库
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补全对话。

Gina: Hi, Mary. Your skirt is so beautiful.

Mary: Thank you very much.

G: 1. _______________?

M: I bought it in Yunnan.

G: Yunnan? Oh, you are so lucky. 2. _______________?

M: Yes, I went there last summer. I had a good time.

G: 3. _______________?

M: It was sunny and warm. I visited many beautiful places.

G: 4. _______________?

M: The people there are very friendly and kind.

G: I hope to visit it one day.

M: I'm sure you’ll love it.

G: I think I will. Oh, I'm afraid I must go now. See you.

M: 5. _______________.

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建设项目总投资中的全部资金资产包括建设项目中投入的()。

A.固定资产

B.流动资产

C.有形资产

D.无形资产

E.现金

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表2003 年我国部分地区工业污染治理投资来源情况(亿元)

2003年甘肃全省污染治理投资总额约为同期北京环保专项资金的()。

A.55%

B.60%

C.75%

D.80%

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SNMP MIB中被管对象的Access属性不包括 (57)

A.只读

B.只写

C.可读写

D.可执行

题型:问答题 简答题

设a,b为正的常系数,λ为非负常数,微分方程


(1)求该方程的通解;
(2)证明:当λ=0时,


当λ>0时,

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