省煤器进口烟比焓Iˊ=4398kJ/kg,出口烟比焓I〞=3490kJ/kg,漏风系

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问题:

省煤器进口烟比焓Iˊ=4398kJ/kg,出口烟比焓I〞=3490kJ/kg,漏风系数Δamn=0.1,冷空气比焓I=199kJ/kg,保温系数Φ=0.976,求省煤器的吸热量Qmn

考点:热力司炉工考试中级热力司炉工中级热力司炉工题库
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根据对话的情景,从方框中选择适当的句子填在画线处,使对话完整通顺。其中有两项是多余的。

(A student meets his English teacher at the station after the summer holiday begins.)

S: Hello. Miss Li. How are you?

T: Oh, fine, thank you.   1   And how are you and your parents?

S: We're all very well, too. Thanks.

T:    2  

S: My parents and I are going to see my grandparents in Shanghai. And you?

T: I'm going to Beidaihe. All the teachers are going.

S:    3   

T: For a week.

S: We're coming back in a week, too.    4    

T: Thank you. Have a good trip! There goes the bell.    5   Goodbye.

S: Bye.

A. Let’s go to the classroom.

B. I hope you’ll enjoy your holiday there.

C. Where are you going now?

D. Will it take you some time?

E. I must go on the train now.

F. Glad to see you here.

G. How long are you staying there?

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* * 脱落细胞检查常用的染色法有()

A.Cram染色

B.抗酸染色

C.Papanicolaou染色

D.革兰染色

E.hematoxylineos(H-E.

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电熔熔接机()必须接受质量监督机构的检验。

A、每半年

B、每一年

C、每两年

D、每五年

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在市场经济中,传递信息的需求,产生了专业化传递价格信息的市场和传递设施,其中()就是属于价格信息传递市场。

A、股票市场

B、资本市场

C、期货市场

D、要素市场

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关于视网膜母细胞瘤的影像特点,下述哪项说法是错误的()

A.肿瘤呈 * * 样或扁平状,多发病灶

B.单眼发病

C.视神经可增粗,视神经孔可扩大

D.砂粒样、斑块样钙化

E.向球外生长者预后不良

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