题目内容
Analysis of two mutual funds, a stock fund-S and a bond fund B, yields the following results: S: Expected Return=0.14 Standard deviation=0.24 B: Expected Return=0.08 Standard deviation=0.14 Covariance between rates of return for S and B=0.00672 A portfolio with equal amounts of S and B will have expected return and standard deviation of:()
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2011年6月6日，某炼油厂油罐区的2号汽油罐发生火灾爆炸事故，造成1人死亡、3人轻伤，直接经济损失420万元。该油罐为拱顶罐，容量200 m3。油罐进油管从罐顶接入罐内，但未伸到罐底，罐内原有液位计因失灵已拆除。 2011年5月20日，油罐完成了清罐检修。6月6日8时，开始给油罐输油，汽油从罐顶输油时进油管内流速为2.3～2.5m/s，导致汽油在罐内发生了剧烈喷溅，随即着火爆炸。爆炸把整个罐顶抛离油罐。现场人员灭火时发现泡沫发生器不出泡沫，匆忙中用水枪灭火，导致火势扩大。消防队到达后，用泡沫扑灭了火灾。 事故发生后，在事故调查分析时发现，泡沫灭火系统正常，泡沫发生器不出泡沫的原因是现场操作人员操作不当，开错了阀门。该厂针对此次事故暴露出的问题，加强了员工安全培训，在现场增设了自动监控系统，完善了现场设备、设施的标志和标识，制定了安全生产应急救援预案。 根据以上场景，回答下列问题(1～3题为单选题，4～8题为多选题) 油罐内发生火灾时，可以选用的灭火剂包括( )。
In securing the shares for all accounts under her management, Linda Kammel of Northwest Futures purchased three blocks of shares at three different prices. She then allocated these shares by placing shares from the first block in accounts with surnames beginning with A-G. The second was allocated over accounts H-P, and the third over Q-Z. This action is:（）
The committee charged with recommending a compensation package for members of a firm’s board of directors has recommended that in addition to compensation of $10000 for each board meeting attended, board members will be able to use one of the firm’s corporate jets up to twice each year and will receive a finder’s fee of 0. 1% if they identify an acquisition target that the firm acquires while the member is still on the board. Are these policies consistent with good corporate governance practices Use of Jet Finder’s fees（）①A. Yes Yes ②B. No Yes ③C. No No
Weights to be used in calculating a company’s weighted average cost of capital are least appropriately based on:（）
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