单项选择题

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某手表厂机械手表产品中的一个齿轮外径设计尺寸为3.1mm,生产过程中所允许的误差为(+0.0015,-0.0020)。某道工序承担并完成齿轮外径的加工,现在需要通过随机抽样对该工序的工序能力进行评估,抽取了250个样品,经测算,样本平均值和公差中心重合,δ=0.00049。根据上述资料,回答下列问题:

A.1.19
B.1.25
C.1.28
D.1.30
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Little Tips for Law-breaking Motorists in CourtEven a careful motorist may have the misfortune to commit a motoring __ (1). In due course, __ (2) a summons(传票), he will appear in a police court. In the court,the motorist hears his name called by the clerk of the court, and comes forward to identify himselF.The magistrate(地方法官)then calls for the policeman who charged the offender and asks him to give evidencE.The officer takes the oath to tell the truth, the whole truth, and__ (3) the truth. He also is expected to give an account __ (4) what happened when the offence was committed and to mention any special circumstances. For instance, the offence__ (5) partly due to the foolishness of another motorist. It would he unwise for the accused motorist to exaggerate this. It will not help his case to try to blame__ (6) for his own mistakE.The magistrate, __ (7) hearing that some other motorist is involved, will doubtless say:'What is being done about this man?' 'Casecoming up later this afternoon,' may__ (8) be the answer.(9) you are guilty, it is of course wise to plead guilty and apologize for committing the'offence and__ (10) the court's timE.magistrates.are not heartless and a motorist may be lucky enough to hear one-say. 'There are mitigating circumstances,(11) you have broken the law and I am obliged to__ (12) a finE.Pay five pounds. Next casE.' For many offences, if you wish to plead gui!ty.~you may do so by po.st and-avoid(13) the court at all.Some short-tempered people forget that both policemen and magistrates have a public duty to perform. and are rude to them. This does not pay and rightly so! A magistrate will not let off an offender__(14) because he is__(15), but the courteous(有礼貌的)lawbreakers may certainly hope that the magistrate will extend to him what tolerance the law permits.第 51 题A.offenceB.crimeC.mistakeD.accident
A.(9)
B.are
C.~you
D.st
E.
Some
F.crime
G.mistake
H.accident