汽轮机凝汽器真空变化,引起凝汽器端差变化,一般情况下,当凝汽器真空升高时,端差()。

题型:单项选择题

问题:

汽轮机凝汽器真空变化,引起凝汽器端差变化,一般情况下,当凝汽器真空升高时,端差()。

A、增大;

B、不变;

C、减小;

D、先增大后减小。

考点:集控值班员考试集控值班员考试题库
题型:单项选择题

班轮运输也要计滞期费和速遣费,但班轮运费相对稳定。( )

题型:单项选择题

标准公开明确、机会平等、效率较高的人员任用方式是( )。

A.委任

B.选任

C.聘任

D.考任

题型:单项选择题

按照权证持有人行权的时间不同,可将权证分为( )。

A.美式权证

B.欧式权证

C.百慕大式权证

D.认股权证

题型:单项选择题

姜片虫病的病原治疗可选用()

A.硫氯酚

B.左旋咪唑

C.槟榔

D.氯喹

E.吡喹酮

题型:单项选择题

Due to a constantly (66) environment, a poor understanding of the user’s needs and preferences, as well as a (67) of willingness to modify (68) organizational structures and decision models, the full economic potential of Web Information Systems (WIS) has not been realized by now. The data object types of the (69) meta model, the Extended World Wide Web Design Technique (eW3DT), provide hypertext designers (70) a conceptual, user-centric framework and graphical notation for the construction of both, (71) and customized models, during the software development (72) of commercial WIS. A reference model as a normative concept represents an abstraction of a (73) company, its functional units, or its (Web) Information System and is intended to streamline the design and implementation of complex applications at (74) costs. As precondition for pursuing a partial globalization strategy, eW3DT (75) between technical and content-specific responsibilities for designing, implementing, and maintaining WIS.

A.exam

B.test

C.reference

D.specialize

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