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问题 单项选择题

朗伯－比尔定律A.＝kC.L中，摩尔吸光系数k值（）表示该物质对某波长光的吸收能力愈强，比色测定的灵敏度就愈高。（）

A.愈大

B.愈小

C.大不一样

答案

参考答案：A

填空题

在升降机中有一单摆，升降机静止时的振动周期为T．当升降机上升时发现周期变为

3T
4
，则此时升降机在做______运动，加速度大小为______m/s2．
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单项选择题

Cullen Casket Company is considering a project that requires a $175000 cash outlay and is expected to produce cash flows of $65000 per year for the next four years. Cullen’s tax rate is 40 percent and the before-tax cost of debt is 9 percent. The current share price for Cullen stock is $32 per share and the expected dividend next year is $1.50 per share. Cullen’s expected growth rate is 5 percent. Cullen finances the project with 70 percent newly issued equity and 30 percent debt, and the flotation costs for equity are 4.5 percent. What is the dollar amount of the flotation costs attributable to the project, and that is the NPV for the project, assuming that flotation costs are accounted for correctly Dollar amount of floatation costs NPV of project（）①A. $5513 $30510 ②B. $5513 $32872 ③C. $7875 $32872

A. ①

B. ②

C. ③
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