讨简则功倍力烦,取舍则论甘忌苦。______

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问题:

讨简则功倍力烦,取舍则论甘忌苦。______

考点:普通考研10医学中医硕士医古文1
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比52多18的数是(    );比63少20的数是(    )。

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患者因龋坏牙充填后五年出现冷热痛偶有自发钝痛就诊,查:左上6近中邻面充填体,颊侧龈壁可探入,发黑,叩诊(±),冷热测疼痛。其原因为()

A.充填物早接触

B.充填时没热没垫底

C.继发龋

D.备洞时操作不当

E.充填体的化学性刺激

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The sudden, dramatic explosion in value of online social media sites like Facebook and Twitter is reminiscent of the rise, about 15 years ago, of the online businesses that created the "dotcom bubble. " The Internet was far less widely used than it is today. Still, visionaries saw the potential for the Internet we have today, so virtual companies sprung up and grew like weeds as investors threw money their way. Some, like Google and Amazon, developed an enduring online presence and lasting financial value. But far too many quickly lost value when it became apparent that their rapid growth wasn’t yielding revenue.

So, how much is Facebook’s network of users really worth The potential is clear—when so many people are gathered in one virtual place, offering so much personal information about themselves, they create an unprecedented platform for targeted advertising. Or they would, if they were on the network to shop. When eBay and Amazon suggest products to their customers, they’re talking to people who’ve already proven that they’re interested in buying similar products. People go on Facebook for a variety of reasons-to catch up with old friends, share pictures, make new acquaintances, and talk, sometimes endlessly, about themselves. Whether they’ll appreciate having their virtual conversations interrupted by advertising, targeted or not, remains unclear.

It’s also unclear whether Facebook will actually be able to share information about its users’ browsing habits with advertisers. Complaints about the ineffectiveness of Facebook’s privacy policies have arisen in multiple countries, part of a larger social concern about how private information gets used on line. In December, the Federal Trade Commission issued a proposed framework that, among other things, would permit Facebook users to block advertisers from accessing information about their online interests. If that framework is implemented and widely used by Facebook subscribers, it could seriously impair the site’s value as a potential platform for targeted marketing.

What is clear is that Goldman Sachs has a significant interest in Facebook’s financial value, at least for the short term. Goldman Sachs’ decision to invest heavily in Facebook has had some interesting impacts. For one thing, the investment has allowed Facebook an opportunity to postpone issuing an IPO. That means that, at least for the moment, Facebook doesn’t yet have to disclose its finances or publicly address investor complaints.

Goldman Sachs’ investment also puts the firm in an ideal position to handle Facebook’s IPO when it eventually is issued, perhaps sometime next year. That, of course, has the potential to generate substantial revenues for Goldman Sachs’ clients. Google’s 2004 IPO raised an initial $1.2 billion for the company. After all the propaganda, Facebook’s IPO can hardly be expected to raise less. However, there remains a significant question as to whether Facebook’s potential for generating income is more virtual than real. If it turns out that Facebook can’t live up to its potential for generating advertising revenue, venture capitalists who invest for the long term may get burned.

Companies like Amazon and Facebook earn their money by()

A. luring more visitors to their sites

B. providing easily accessible services

C. attracting advertisements

D. offering a platform for free conversations

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下列说法中正确的是()。

A.确定当量法有夸大远期风险的特点

B.确定当量法可以和净现值法结合使用,也可以和内部报酬率法结合使用

C.按风险调整贴现率法把时间价值和风险价值混在一起,并据此对现金流量进行贴现

D.确定当量法的主要困难是确定合理的约当系数

E.确定当量法可以降低投资决策的风险

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存款准备金率的调整会影响商业银行的存款成本和贷款收益。( )

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