2007年上海市公务员考试 行测(2)

31333537 B． C． D． 343638400381524x，，，，，，观察可知，分子分母各自都是二级等差数列，所36111827y【解析】C。原式等同于

以x=24+11＝35，y＝27+11=38。

二、数学应用（6～10题）：每道试题中给出表述数字关系的一段文字材料。要求考生从4个选项中找出最符合题意的正确答案。

请开始答题：

6．某企业计划从2003年起产量每年比上一年增长7％，按此计划2008年产量比2003年增加（ ） A．35％ B．42％ C．(1?7%)5?1 D．(1?7%)6?1

(1?7%)5?1【解析】C。设2003年产量为1，2008年则为(1?7%)，那么增加为。

157．某市为合理用电，鼓励各用户安装“峰谷”电表。该市原电价为每度0.53元，改装新电表后，每天晚上10点至次日早上8点为“低谷”，每度收取0.28元，其余时间为“高峰”，每度收取0.56元。为改装新电表每个用户须收取100元改装费。假定某用户每月用200度电，两个不同时段的耗电量各为100度。那么改装电表12个月后，该用户可节约 元。

A．161 B．162 C．163 D．164

【解析】D。用户改装新表12个月共花费电费0.28×100+0.56×100×12＝1008元，改装费100元；改装前所耗电费为0.53×200×12＝1272元，所以共节省1272-1008-100＝164元。

8．某日人民币外汇牌价如下表（货币单位：人民币元），按照这一汇率，100元人民币约可以兑换 美元。

货币名称 100USD 100EUR 100JPY 100HKD 100GBP 中间价 786.97 1003.53 6.6704 101.102 1497.85 A．12.6l B．12.66 C．12.7l D．12.76

【解析】C。由上表可知，100美元可兑换786.97人民币，那么100人民币可兑换的美元金额为

100?100?12.71。

786.979．一吨土豆的价格是200元，一吨洋葱的价格是290元。如果土豆的价格1个月提高15％，而洋葱的价

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