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旋转刹车时，一脚蹬空或刹不住车，试述故障原因及排除方法。

答案

参考答案：

原因：（1）分泵故障；（2）管路故障；（3）总泵故障；（4）制动器蹄片退距间隙调整不当。

排除方法：（1）检查分泵是否有漏油现象，如果有漏油现象，说明系统内会进气体，从而造成时一脚蹬空；（2）检查管路中各接头是否有漏油现象；（3）检查接头是否漏油，活塞孔是否漏油，如果出现漏油说明泵内密封件磨损；（4）调整退距间隙在0.8-1mm。

判断题

中国官场的腐败行为突出表现在：一是干预宏观经济，二是干预选人用人。
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单项选择题

An editorial in the Grandbury Daily Herald claims that Grandburg’s voters would generally welcome the defeat of the political party now in control of the Grandburg City Council. The editorial bases its claim on a recent survey that found that 59 percent of Granburg’s registered voters think that the party will definitely be out of power after next year’s city council elections.
Which one of the following is a principle that, if established, would provided the pest justification for the editorial’s conclusion

A．The way voters feel about a political party at a given time can reasonably be considered a reliable indicator of the way they will continue to feel about that party, barring unforeseeable political developments.

B．The results of surveys that gauge current voter sentiment toward a given political party can legitimately be used as the basis for making claims about the likely future prospects of that political party.

C．An increase in ill-feeling toward a political party that is in power can reasonably be expected to result in a corresponding increase in support for rival political parties.

D．The proportion of voters who expect a given political possibility to be realized can legitimately be assumed to approximate the proportion of voters who are in favor of that possibility being realized.

E．(E) It can reasonably be assumed that registered voters who respond to a survey regarding the outcome of a future election will exercise their right to vote in that election.
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