凝汽式发电机组进行热能和机械能转换时采用的热力循环是()。A、正向卡诺循环; B、逆

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问题:

凝汽式发电机组进行热能和机械能转换时采用的热力循环是()。

A、正向卡诺循环;

B、逆向卡诺循环;

C、郎肯循环;

D、蒸汽燃汽联合循环。

考点:热工程控保护考试热工程控保护中级工热工程控保护中级工题库
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M: Hello, Amy. Are you coming to my birthday party

W: Yes, I am. How do I get to your house from the station

M: Well, call me when you get to the station and I’ll come and pick you up in my car.

W: Are you sure it won’t be too much trouble

M: It’s no trouble at all. It only takes about 15 minutes.

W: Oh. I want to check your phone number. Is it 82881688

M: No. It’s 81881688.

W: Oh, really I’m glad I checked.

M: what time do you plan to arrive at the station

W: I plan to get there around 8:30.

M: Ok. See you then.

W: See you. Goodbye.

How can the woman get to the man’s house ()

A. She will be picked up at the station.

B. She will be picked up at her own house.

C. She will take a train there.

D. She will take a bus.

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技术在大机器工业革命以前,主要表现()技艺。

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A.1996

B.1997

C.1998

D.不清楚

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2002年诺贝尔物理学奖中的一项,是奖励美国科学家贾科尼和日本科学家小柴晶俊发现了宇宙X射线源.X射线是一种高频电磁波,若X射线在真空中的波长为λ,以h表示普朗克常量,c表示真空的光速,以E和m分别表示X射线每个光子的能量和质量,则(  )

A.E=,m=0

B.E=,m=

C.E=,m=0

D.E=,m=

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急性牙槽脓肿脓液最常见的自然排放途径为()。

A.根尖周-根尖孔-髓腔

B.根尖周-骨髓腔-鼻腔

C.根尖周-骨膜下-皮下

D.根尖周-骨膜下-黏膜下

E.根尖周-骨髓腔-上颌窦

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