問題(もんだい) 5問題(もんだい)5では、長(なが)めの話(はなし)を聞(き)きま

单词拼写。

1. An e ____ is a kind of machine for raising and lowering something.

2. In America a flat is called an a____.

3. The writer of that country has an ____ (国际) fame.

4. ISBN stands for International S____ Book Number.

5. The Germans speak English with a strong German a____.

6. He had lost his ____ (身份) card and was being questioned by the police.

7. He made ____ (迅速) progress in his English study.

8. They have ____ (承认) him to be their leader.

9. ____ (实际上), you owe me more than this.

10. All the people ____ (在场的) are table tennis lovers.

与十进制数291等值的十六进制数为

A．123

B．213

C．231

D．132

我国发展循环经济的实施原则是( )。

A．减量化优先

B．再利用优先

C．以资源化为核心

D．以标准化为基础

氢原子从-3.4eV的能级跃迁到-0.85eV的能级时，是发射还是吸收光子？这种光子的波长是多少（计算结果取一位有效数字）？图中光电管用金属材料铯制成，电路中定值电阻R₀=0.75Ω，电源电动势E=1.5V，内阻r=0.25Ω，图中电路在D点交叉，但不相连．R为变阻器，O是变阻器的中间抽头，位于变阻器的正中央，P为滑动端．变阻器的两端点ab总阻值为14Ω．当用上述氢原子两能级间跃迁而发射出来的光照射图中的光电管，欲使电流计G中电流为零，变阻器aP间阻值应为多大？已知普朗克常量h=6.63×10^-34J•s，金属铯的逸出功为1.9eV．1eV=1.6×10^-19J．

上消化道为口腔至（）的一段.