更多“一个正方形的边长是a厘米，当a=10时，这个正方形的面积是(”相关的问题
甲公司为境内注册的公司，为增值税一般纳税人，适用的增值税税率为17%，其30%收入来自于出口销售，其余收入来自于国内销售；生产产品所需原材料有30%进口，出口产品和进口原材料通常以美元结... 下列关于外币交易产生汇兑损益的说法中，正确的有______。
A.将100万美元兑换为人民币，产生汇兑损失8万元
B.期末银行存款外币账户产生汇兑损益298万元
C.期末银行存款外币账户产生汇兑损益-298万元
D.期末应收账款外币账户产生汇兑损益-230万元
E.期末应收账款外币账户产生汇兑损益-155万元
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任何一门学科领域都包含基本概念、基本理论和基本方法，因此通过学习任何一门专业，都可以掌握一套“如何学习的方法”。
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甲公司因某或有事项确认预计负债100万元，同时由于该或有事项，甲公司基本确定可以从乙公司获得20万元的赔偿。不考虑其他因素，则甲公司的下列处理中，正确的有（）。
A.应确认预计负债100万元
B.应确认预计负债80万元
C.应确认营业外支出80万元
D.应确认其他应收款20万元
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图示承受气体压力的薄壁圆筒，壁厚为t，平均直径为D，材料的弹性模量为E，泊松比ν已知。现测得A点沿x方向的线应变为εx，求筒内气体压力p。
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中国是世界（）主权国家的最大贸易伙伴。
A.98个
B.113个
C.128个
D.136个
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听力原文： Lecturer: In the last lecture, we looked at the adverse effects of desert dust on global climate. Today we're going to examine more closely what causes dust storms and what other effects they can have. As you know, dust storms have always been a feature of desert climates, but what we want to focus on today is the extent to which human activity is causing them. And it is this trend that I want to look at, because it has wide-ranging implications. So, what are these human activities? Well, there are two main types that affect the wind erosion process, and thus the frequency of dust storms. There are activities that break up naturally wind-resistant surfaces such as off-road vehicle use and construction and there are those that remove protective vegetation cover from soils, for example, mainly farming and drainage. In many cases the two effects occur simultaneously which adds to the problem.Let's look at some real examples and see what I'm talking about. Perhaps the best-known example of agricultural impact on desert dust is the creation of the USA's 'dust bowl' in the 1930s. The dramatic rise in the number of dust storms during the latter part of that decade was the result of farmers' mismanaging their land. In fact, choking dust storms became so commonplace that the decade became known as the 'Dirty Thirties'.Researchers observed a similar, but more prolonged, increase in dustiness in West Africa between the 1960s and the 1980s when the frequency of the storms rose to 80 a year and the dust was so thick that visibility was reduced to 1,000 metres. This was a hazard to pilots and road users. In places like Arizona, the most dangerous dust clouds are those generated by dry thunderstorms. Here, this type of storm is so common that the problem inspired officials to develop an alert system to warn people of oncoming thunderstorms. When this dust is deposited it causes all sorts of problems for machine operators. It can penetrate the smallest nooks and crannies and play havoc with the way things operate because most of the dust is made up of quartz which is very hard. Another example - the concentration of dust originating from the Sahara has risen steadily since the mid-1960s.This increase in wind erosion has coincided with a prolonged drought, which has gripped the Sahara's southern fringe. Drought is commonly associated with an increase in dust-raising activity but it's actually caused by low rainfall which results in vegetation dying off.One of the foremost examples of modern human-induced environmental degradation is the drying up of the Aral Sea in Central Asia. Its ecological demise dates from the 1950s when intensive irrigation began in the then Central Asian republics of the USSR. This produced a dramatic decline in the volume of water entering the sea from its two major tributaries. In 1960, the Aral Sea was the fourth-largest lake in the world, but since that time it has lost two-thirds of its volume, its surface area has halved and its water level has dropped by more than 216 metres. A knock-on effect of this ecological disaster has been the release of significant new sources of wind-blown material, as the water level has dropped.And the problems don't stop there. The salinity of the lake has increased so that it is now virtually the same as sea water. This means that the material that is blown from the dry bed of the Aral Sea is highly saline. Scientists believe it is adversely affecting crops around the sea because salts are toxic to plants.This shows that dust storms have numerous consequences beyond their effects on climate, both for the workings of environmental systems and for people living in drylands ...SECTION 4 Questions 31-40Questions 31-32Complete the notes using NO MORE THAN THREE WORDS for each answerMain focus of lecture: the impact of 【31】______ on the occurrence of dust st
A.B.C.D.E.F.G...SECTION
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艺术真实的特征，与生活真实不同体现在（）
A.内蕴的真实
B.诗艺的真实
C.主观的真实
D.假定的真实
E.客观的真实
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共检的实施要件，包括关键环节和关键节点.未经质检核准，视为（）。
A.内返
B.从技术做到管理
C.从自己干到大家合作干
D.预诊
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钨极氩弧焊的钍钨电极应放在地下室用（）保存。
A . 塑料盒
B . 木盒
C . 铅盒
D . 铁盒
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三、事件排序在回答问题时，要根据自己的一般知识和对事件间的逻辑关系的理解做些补充或合理的假设，以填补缺欠的信息。每道题给出五个事件，每个事件是以简短语句表述的，接着给出四种假定发生...(1)运动剧烈 (2)送往医院 (3)心脏病发作 (4)急救 (5)恢复知觉
A．1-3-2-4-5
B．1-2-3-4-5
C．3-2-4-1-5
D．3-1-2-4-5
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电动机尾端的风叶是电动机壳体散热降温的。
A . 正确
B . 错误
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关于振法叙述不正确的是（）
A.运用肌肉强力地静止性作用力 B.操作时力量要集中于着力部位 C.振动的频率较高 D.着力稍轻 E.有指振法和掌振法之分
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卫星数字视频编码调制器E5788输出中频范围一般是（）。
A.50-180MHZ B.0-300MHZ C.60-80MHZ D.40-90MHZ
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设曲线L：f（x，y）=1（f（x，y）具有一阶连续偏导数）过第二象限内的点M和第四象限内的点N，为L上从点M到点N的一段弧，则下列积分小于零的是（）
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