（）是陆地上遂行作战任务的军种，是陆战场决定胜负的主要力量。A.步兵 B.装甲兵 C

发布时间：2017-07-12 05:00 │ 来源：www.tikuol.com

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问题：

（）是陆地上遂行作战任务的军种，是陆战场决定胜负的主要力量。

A.步兵

B.装甲兵

C.陆军

D.炮兵

考点：国防知识竞赛国防知识竞赛题库

题型：单项选择题

黄铁矿(主要成分为FeS₂)是工业制取硫酸的重要原料，其煅烧产物为SO₂和Fe₃O₄。

(1)将0.050 mol SO₂(g)和0.030 mol O₂(g)放入容积为1 L的密闭容器中，反应2SO₂(g)＋O₂(g)2SO₃(g)在一定条件下达到平衡，测得c(SO₃)＝0.040 mol/L。计算该条件下反应的平衡常数K和SO₂的平衡转化率(写出计算过程)。

(2)已知上述反应是放热反应，当该反应处于平衡状态时，在体积不变的条件下，下列措施中有利于提高

SO₂平衡转化率的有________(填字母)

(A)升高温度 (B)降低温度 (C)增大压强 (D)减小压强 (E)加入催化剂 (G)移出氧气

(3)SO₂尾气用饱和Na₂SO₃溶液吸收可得到重要的化工原料，反应的化学方程式为_________________________________。

(4)将黄铁矿的煅烧产物Fe₃O₄溶于H₂SO₄后，加入铁粉，可制备FeSO₄。酸溶过程中需保持溶液足够酸性，其原因是_______________________。

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题型：单项选择题

以下那些检查用于颈椎病的检查

A．椎间孔挤压试验

B．分离试验

C．臂丛神经牵拉试验

D．屈颈试验

E．搭肩试验

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了解输卵管阻塞部位（）

A. * * 后穹隆穿刺

B.诊断性刮宫

C.子宫输卵管造影术

D.宫颈活组织检查

E.妊娠试验

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题型：单项选择题

完形填空。
The two teachers were sitting in the teachers' room. For a moment there was _1 . Then one of them,Miss Smith, said, "I'm afraid I'd have to _2_ him." "Now, Alice," said her friend Mrs. Black, "is he such a terrible student?" "That's just the _3 ." the other woman replied. "Mike is my best student. The problem is that he's now so lazy that he never gets his 4 done. He hasn't handed me_5 of his homework for three weeks and I'd be surprised_6 he did now." _7 before had Mrs. Black seen Miss Smith look so unhappy. "Have you 8 with him about it?" she asked. "Why should I? He knows he has to prepare his lessons and do his homework. I _9 that clear the first day for class. When the course started he did so 10 considered asking the _11 to give him a scholarship . But now he even 12 in class! I've never seen such a _13_ in a student! "You should have _14 with him. Give him a chance to tell his side of the story." Miss Smith spoke to Mike and 15_ all about it. He was studying all day and 16 most of the night in a factory to pay for his education. Of course he was tired in the _17 and sometimes could hardly keep 18 . Miss Smith soon arranged for him to have a _19_ and he was able to give up his _20 and concentrate on his studies,
( )1. A. distance ( )2. A. fail ( )3. A. lesson ( )4. A. homework ( )5. A. some ( )6. A. even ( )7. A. Long ( )8. A. quarreled ( )9. A. said ( )10. A. quickly ( )11. A. school ( )12. A. talks ( )13. A. matter ( )14. A. lesson ( )15. A. studied ( )16. A. sleeping ( )17. A. morning ( )18. A. silent ( )19. A. scholarship ( )20. A. education	B. silence B. teach B. thing B. housework B. plenty B. if B. Until B. talked B. thought B. often. B. class B. sleeps B. change B. look B. got B. working B. afternoon B. clean B. room. B. sleep	C. pleasure C. beat C. trouble C. cleaning C. any C. though C. Ever C. dealt C. required C. much C. others C. laughs C. habit. C. talk C. learned C. spending C. evening C. warm C. teacher C. job	D. delight. D. tell D. boy D. washing D. lots D. when D. Never D. discussed D. made D. well D. parents D. walks D. way D. meeting D. understood D. staying D. class D. awake D. position D. pay

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检定或校准的原始记录是指（）。

A、记在草稿纸上，再整理抄写后的记录

B、当时的测量数据及相关信息的记录

C、先记在草稿纸上，然后输入到计算机中保存的记录

D、经整理计算出测量结果的记录

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