The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?
A. 32% A. 40% B. 48% C. 60% D. 88%answer: B请教这题的思路。 我得答案不一样， 是 60％。 也许题意理解错了。 谢谢指教作者: teyvhf 时间: 2004-10-25 14:00
80%×（1－40％）＝48％。
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
