有关胸外心脏按压位置，正确的定位是（）。

[单选题]在Powerpoint2010中，对已做过的有限次编辑操作，以下说法正确的是（）

[单选题]Questions from 31 to 35 are based on the following passage: 　　The exporter, as drawer of a draft (bill of exchange), hands the draft to his bank, the remitting bank, who in turn forwards it to the buyer through a collecting bank in the buyer’s country. A draft (also called a bill) is a written order to a bank or a customer to pay someone on demand or at a fixed time in the future a certain sum of money. If shipping documents accompany the draft, the collection is called “documentary collection.” 　　Documentary collection falls into two major categories: one is documents against payment(D/P); the other, documents against acceptance (D/A). 　　Documents against payment, as the term suggests, is that the collecting bank will only give the shipping documents representing the title to the goods on the condition that the buyer makes payment. 　　Where the paying arrangement is D/A, the collecting bank will only give the buyer the shipping documents after buyer’s acceptance of the bill drawn on him, i.e. the buyer signs his name on the bill promising to pay the sum when it matures. In return he gets what he needs – the shipping documents. 　　Under D/A, the seller gives up the title to the goods – shipping documents before he gets payment of the goods. Therefore, an exporter must think twice before he accepts such paying arrangement. In a transaction, if payment is made by collection, then the remitting bank is always located in（）

[填空题]着色渗透探伤和荧光渗透探伤相比最大的不同就是不使用（）

[问答题]心理健康特征有哪些？

[填空题]隧道内高瓦斯工区和瓦斯突出工区必须采用安全（）机电设备。

[问答题]实证研究与规范研究之间的区别？

[判断题]一般来说,高息货币的远期汇率表现为贴水,低息货币的远期汇率表现为升水。()

[多选题]下列项目中，不符合会计信息质量可比性要求的有（　）

[填空题]电厂水处理用的阴、阳离子交换树脂，是由（）和（）共聚而成的高分子化合物。

[问答题]回转式压缩机可分为哪几类？