某企业连续n年，每年年初向银行借贷A万元，借款年利率为r，每半年复利计息，则第n年末一次归还贷款额的正确表达式为（）。

[单选题]Passage2For centuries in Spain and Latin America，heading home for lunch and a snooze with the family was something like a national right，but with global capitalism standardizing work hours，this idyllic habit is fast becoming an endangered pleasure.Ironically，all this is happening just as researchers are beginning to note the health benefits of the afternoon nap.According to a nationwide survey，less than 25 percent of Spaniards still enjoy siestas.And like Spain，much of Latin America has adopted Americanized work schedules，too，with shortened lunch times and more rigid work hours.Last year the Mexican government passed a law limiting lunch breaks to one hour and requiring its employees to work their eight-hour shift between 7 a.m. and 6p.m.Before the mandate，workers would break up the shift-going home midday for a long  break with the family and returning to work until about 9 or 10 p.m. The idea of siesta is changing in Greece, Italy and Portugal, too, as they rush to join their more "industrious"counterparts in the global market.Most Americans I know covet sleep, but the idea of taking a nap mid-afternoon equates with laziness, unemployment and general sneakiness. Yet according to a National Sleep Survey poll, 65 percent of adults do not get enough sleep. Numerous scientific studies document the benefits of nap taking, including one 1997 study on the deleterious effects of sleep deprivation in the journal Internal Medicine. The researchers found that fatigue harms not only marital and social relations but worker productivity.According to Mark Rosekind,a former NASA scientist and founder of Solutions in Cupertino, Calif, which educates businesses about the advantages of sanctioning naps, we' re biologically programmed to get sleepy between 3 and 5 p.m. and 3 and 5 a.m. Our internal timekeeper-called the circadian clock-operates on a 24-hour rotation and every 12 hours there's a dip. In accordance with these natural sleep rhythms, Rosekind recommends that naps be either for 40 minutes or for two hours. Latin American countries, asserts Rosekind, have had it right all along. They' ve been in sync with their clocks; we haven't.Since most of the world is sleep-deprived, getting well under the recommended eight hours a night(adults get an average of 6.5 hours nightly), we usually operate on a kind of idle midday. Naps are even more useful now that most of us forfeit sleep because of insane work schedules, longer commute times and stress, In a study published last April, Brazilian medical researchers noted that blood pressure and arterial blood pressure dropped during a siesta.In the second sentence of Paragraph 1,"all this"refers to_______ .

[单选题]胃溃疡病变部位最常见于：（）

[单选题]控制两个对等实体进行通信的规则的集合称为（）。

[问答题]新闻舆论监督是？

[单选题]某施工项目经理部为了赶工，制订了增加人力投入和夜间施工两个赶工方案并提交给项目经理。项目经理最终选择增加人力投入的赶工方案，则该项目经理的行为属于管理职能的（）环节。

[判断题]扣球击球点就是起跳的最高点。

[问答题]“七喜”牌饮料是许多软饮料中的一处，那些需求刺激性小和有柠檬味饮料的偏好老年人，是“七喜”的主要购买者。调查结果表明，即使大部分软饮料消费者偏好“可乐”，他们也不是始终如一，况且还有许多消费者不喜欢喝可乐饮料。“七喜”公司使了一个高招，通过一次明智的活动标榜自己是生产非可乐饮料的，从而获得了非可乐饮料的市场领导地位。非可乐饮料是一种既新颖又提神的饮料，其目的是取代“可乐”。“七喜”公司为消费者开创了一个新视野，即软饮料市场中包含可乐饮料和非可乐饮料，其中“七喜”饮料在非可乐饮料市场中占据领导地位。　　问：　　（1）“七喜”公司所采取的品牌策略是什么？实施此策略的一般背景是什么？　　（2）“七喜”公司采取上述策略时需考虑的因素包括哪些？

[填空题]电火花型腔加工的工艺方法有：（）、（）、（）、简单电极数控创成法等。

[多选题]踝关节扭伤分度中二度是指（）。

[判断题]中毒原因的调查中通常以发生中毒的个人为起点。（　　）

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