选用绝热材料,应满足的基本条件是()。
A.λ=1 W/m·K
B.λ<0.23W/m·K
C.λ>0.23 W/m·K
D.λ=0.5W/m·K
参考答案:B
选用绝热材料,应满足的基本条件是()。
A.λ=1 W/m·K
B.λ<0.23W/m·K
C.λ>0.23 W/m·K
D.λ=0.5W/m·K
参考答案:B
阅读理解。 | |
Steve | |
1. Why did Jobs resign as CEO of Apple according to the letter? | |
A. He was found seriously ill in 2003. B. He felt he could no longer meet the responsibilities as a CEO. C. He would like to be Chairman of the Board rather than CEO. D. He was on medical leave for most of 2011. | |
2. Which of the following statement is NOT true? | |
A. After receiving the medical treatment, Jobs was in good health again. B. Tim Cook was a friend and co-worker of Jobs. C. People will remember and honor Jobs for his influence in the technology and music industries. D. Jobs believed that Apple would have a bright future. | |
3. What is Jobs' mood when writing this letter? | |
A. Optimistic for the company B. Sorry for himself C. Grateful to his friends and co-workers |