题目内容

社会主义发展史上的第一次历史性飞跃是指（）

A. 19世纪中叶，社会主义从空想发展到科学
B. 20世纪初，社会主义从理论发展到建立社会主义制度的实践
C. 社会主义从一国实践发展到多国实践
D. 20世纪70年代末开始的社会主义改革

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下列反应中，ΔrSm⊙最大的是

A. C（s）+O2（g）=CO2（g）
B. 2SO2（g）+O2（g）=2SO3（g）
C. 2NH3（g）= 3H2（g）+N2（g）
D. CuSO4（s）+5H2O（l）=CuSO4·5H2O（s）

在某温度下，反应1/2N2(g) + 3/2H2(g)→NH3(g)的平衡常数K=a。上述反应如果改写为2NH3(g) →N2(g) + 3H2(g)，则在相同温度下反应的平衡常数为

A. a
B. 1/a
C. a2
D. 1/a2
E. a/2

There are ten sentences in this section. Beneath each sentence there are four words or phrases marked A, B, C and D. Choose one word or phrase that best completes the sentences.1. I have found that the community has _ great changes since I was here last.A. submitted B. undergone C. sustained D. experimented2. In running this business, I need to ask myself whether what I’m doing is aligned with my goals.A. invariably B. usually C. endlessly D. constantly3. He was the sort of good listener who seemed to find everybody else more interesting and__than himself.A. impossible B. impressive C. unlikely D. unimaginable4. It is much better to concentrate on a few subjects which interest you than try to _ your mind with knowledge.A. fill B. full C. meet D. fulfill5. Rather than being hoodwinked, I would anything.A. indulge B. diverge C. endure D. instruct6. A fortunate encounter brought the two friends together after a long _.A. distinction B. difference C. separation D. discrimination7. Most of us thought that you to those questions in an interesting and unusual way.A. reacted B. impacted C. worked D. acted8. I have often seen him upon the moon and stars for hours. Why do you think he is doing that?A. look B. glance C. stare D. gaze9. We a parent to care for us, to forgive us our errors, and to save us from our childish mistakes.A. search for B. long for C. for long D. look after10. His occasional courtesies did not _ his general rudeness.A. compensate for B. pay back C. keep up D. change into

( )单元组成部分包括:旋转工作台模块、钻孔模块、钻孔检测模块、电气控制板、操作面板、I/O转接端口模块、CP阀岛、过滤减压阀等。

A. 加工
B. 搬运
C. 供料
D. 操作手