当其他条件不变时,对于气体参加的反应和溶液中进行的反应,增大反应物的浓度,反应速率(

题型:单项选择题

问题:

当其他条件不变时,对于气体参加的反应和溶液中进行的反应,增大反应物的浓度,反应速率()。

A.增大

B.减小

C.不变

D.无法确定

考点:油务化验员考试油务员综合练习油务员综合练习题库
题型:单项选择题
完形填空。
        Some students cheat (作弊) because they're busy or lazy and they want to get good grades without
 1    the time studying. Other students might feel that they can't   2   the test without cheating. Even when
there seems to be a "good reason" for cheating, it isn't a good   3 .
        A student who thinks cheating is the only way to pass a test  4   to talk with the teacher and his or
her parents so they can find some better ways together. Talking about these problems and   5  them out
will help feel better than cheating. 
        If a student is  6   cheating, the teacher may give a "  7 " on the test, send him or her to the head
teacher's  8   , and call his or her parents. Worse than the   9  grade may be the feeling of having
disappointed those people,   10  parents and teachers. A parent may worry that you are not an  11   person
and a teacher might watch you more   12   the next time you're taking a test.
       There are plenty of reasons why a kid shouldn't cheat, but some students have already cheated. If
that's you, it's  13   too late to stop cheating. Cheating can become a   14 , but a student is always able to
act better and make better 15   . It might help to talk the problem over with a parent, teacher, or friend.
(     )1. A. taking   
(     )2. A. write   
(     )3. A. idea    
(     )4. A. decides  
(     )5. A. breaking  
(     )6. A. caught   
(     )7. A. prize   
(     )8. A. office   
(     )9. A. bad    
(     )10. A. and    
(     )11. A. outgoing 
(     )12. A. closely  
(     )13. A. always  
(     )14. A. menu   
(     )15. A. education 
B. spending  
B. exercise  
B. purpose  
B. hopes   
B. working  
B. offered  
B. result   
B. school   
B. dangerous 
B. besides  
B. honest   
B. bravely         
B. never   
B. medicine  
B. decisions 
C. costing    
C. pass       
C. conclusion                                        
C. needs      
C. missing    
C. appeared   
C. zero       
C. seat       
C. anxious    
C. like                                                              
C. interesting
C. certainly  
C. once       
C. habit      
C. challenges 
题型:单项选择题

材料一:民以食为天, 食以安为先,食品安全问题是关系到千千万万人民群众切身利益的社会问题。2011年来,食品安全事件层出不穷,从“皮革奶”到“瘦肉精”,从“染色馒头”到“毒豆芽”,使百姓身体健康和生命安全蒙受损失。

材料二:当前,在食品生产经营中违法添加非食用物质和滥用食品添加剂已成为影响食品安全的突出问题。为严厉打击食品非法添加行为,进一步加强食品添加剂监管,切实维护人民群众身体健康和生命安全。4月21日,国务院办公厅发布《关于严厉打击食品非法添加行为切实加强食品添加剂监管的通知》,要求各地各部门,严厉打击食品非法添加行为,切实加强食品添加剂监管。

材料三:2009年6月1日起施行的《中华人民共和国食品安全法》明确规定,生产经营者是食品安全的第一责任人;社会团体或者其他组织、个人在广告中向消费者推荐不符合食品安全标准的食品,使消费者的合法权益受到损害的,与食品生产经营者承担连带责任。

(1)对材料一反映出的问题,我们从经济常识的角度应该如何认识?(8分)

(2)简要说明材料二、三所体现的政治学道理。(4分)

(3)请你就如何遏制食品安全问题从政府、企业和消费者任选一个角度提两条建议。(2分)

题型:单项选择题

数控系统操作面板上的工作方式选择开关中,“JOG”表示()操作方式。

A.手动点动;

B.手轮进给;

C.手动数据输入;

D.自动运行

题型:单项选择题

甲开发商将一套别墅分别卖给了乙和丙,因资金紧张甲又将该别墅抵押给了丁。因别墅未交付,甲又将该别墅租给了戊。因买卖、抵押、租赁而发生纠纷。请回答下列问题:

设甲与乙的合同签订在先,甲与丙的合同签订在后,而丙取得了该房屋的所有权。乙对甲享有下列哪些权利?()

A.可主张合同无效

B.可主张撤销合同

C.可主张解除合同

D.可主张违约责任

题型:单项选择题

下列属于义的含义的是()

A.人的礼仪容止

B.一切合于事宜的举止

C.正当的道理意义

D.都是

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