无风险的

First of all, the valuation errors in TXO of the BS-IV model are the smallest among all volatility models. In the whole, the BS-IVmodel underprices the market value, BS-HV, BS-EV（EGARCH（1,1））and Ad hoc BS model overprice the market value respectively. Next, there exist the linear relationships between the valuation errors and moneyness in TXO mostly. At last, in view of hedging errors, the other thing being equal, the shorter is the maturity, the smaller is the hedging error.

本文的实证发现，在评价误差方面，整体而言，隐含波动性模型对买权及卖权的评价误差最小，隐含波动性模型之理论价格低估了市场价格；而历史波动性模型、EGARCH（1，1）模型及平滑后的历史波动性模型之理论价格则大多高估了市场价格；接著，在评价误差与金融特性关系方面，各波动性模型之评价误差与价内价外程度、股价指数报酬率、股价指数波动性、距到期日及无风险利率等因素，大多具有显著的线性关系。

In summary, FA is a sensitive indicator of the environmental stress and ecological risks induced in the parasitoid by exposure to Bt-cotton.

Bt棉对异色瓢虫也无影响，但在取食了转Bt基因棉的棉铃虫体内发育的寄生蜂较之对照表现为卵-结茧历期延长、茧重减轻、成虫寿命缩短，而其FA与个体结茧-出蜂历期呈显著正相关，表明FA是反映转Bt基因棉对斑痣悬茧蜂不利影响的敏感指标，可望成为转Bt基因棉生态风险的早期预警指标。

Testing directly the hypothesis that the intercept is the risk-free rate when the weekly Treasury bill rate is used for this purpose, we accept this hypothesis at the 5% level for the groups of 30 and 60 stocks but reject it for groups of 90 stocks at the 10% level .

直接拦截试验是假设无风险利率当务周刊法案速度的快慢为此我们接受这个假说在5%左右的股票和60组30批90但拒绝为股票10%的水平。

Implications :(1) The risky portfolio than when combined with the riskless asset maximizes returns is the market portfolio.

影响 ：（ 1 ）高风险的投资组合比时，合并与无风险资产的回报最大化，是市场的投资组合。

But in actual financial market,the stock prices maybe affected by multi-factor,it pays dividend,and and riskless interest rate etc is function of time.

然而在实际的金融市场中，股票的价格可能受多个随机因素的影响，股票支付红利，而且无风险利率等随时间而变化。

Memory stakes a trail in a roadless land as a Saami, or Lapp, herder heads for his reindeer herd 30 miles [48 kilometers] from Lovozero.

记忆的风险一条小径在无路的土地例如萨米族，或拉普兰人，牧人首领为他的驯鹿群30英里（48公里）从Lovozero 。

In a typical scenario, users might be using MS Outlook in their office; on the road, they might be using a laptop or Pocket PC for a quick check without the risk of creating multiple, unsynchronized copies of incoming messages.

在典型的情况下，用户可使用MSoutlook在自己的办公室；在马路上，他们可能会使用一台笔记本电脑或PocketPC的一支快速查无风险，创造多元，unsynchronized份邮件。

Methods Polymerise chain reaction and restriction fragment length polymorphism were used to analyze the polymorphisms of MTHFR genes C6677T and A1298C in 56 patients of colorectal cancer and 143 age-and-sex-matched control subjects.

方法以聚合酶链反应和限制性片段长度多态方法，对56例直肠癌患者和143例正常人对照的MTHFR基因C677T和A1298C基因型进行检测分析其对直肠癌风险的相关性。结果在正常对照组中，MTHFRC677TCC、CT、TT基因型频率分别为62·90%、35·08%和2·12%，而在直肠癌病人中分别为58·93%、26·77%和14·26%。A1298C与A1298C基因型在病例和对照中的分布差异无显著性意义。

Her post, titled "It's a bad time to start a company," was a frank argument that a bubble was reinflating Internet businesses. Valuations are rising, hordes of copycat companies are getting funded, and venture capitalists are flooding hot areas with money again.

她的名为&现在不是创业的好时候&稿子坦率直言泡沫经济重新充满互联网业：企业估价在上升，大量无创意的公司获得融资，风险资本充斥热点领域。

It's amazing how our simple little low cost monthly program can produce a MEANINGFUL RESIDUAL MONTHLY INCOME and SIMI is 100% RISK FREE!

这是令人惊叹我们简单的小成本低的每月计划可产生一个有意义的残余每月入息及学生运动是100 ％无风险！

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷