稀薄燃烧是指汽油在较大空/燃比(空气与燃油气的体积比)条件下的燃烧。随着全球能源

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问题:

稀薄燃烧是指汽油在较大空/燃比(空气与燃油气的体积比)条件下的燃烧。随着全球能源危机的加剧,稀薄燃烧技术的研究受到了人们的重视,但稀薄燃烧时,常有的汽油尾气净化装置不能有效地将NOx转化为N2。不同空/燃比时汽车尾气中主要污染物的含量变化如图所示。

(1)稀薄燃烧技术除能节约能源外,还具有的优点是________(填一项)。排放到大气中的NOx会导致酸雨、__________等环境问题(填一项)。

(2)某校化学研究性学习小组的同学在技术人员的指导下,按下列流程探究不同催化剂对NH3还原NO反应的催化性能。

若控制其他实验条件均相同,在催化反应器中装载不同的催化剂,将经催化反应后的混合气体通入滴有酚酞的稀硫酸溶液(溶液的体积、浓度均相同)。为比较不同催化剂的催化性能,需要测量并记录的数据是_______________。

(3)若某一催化剂能同时催化NH3等还原性气体与NOx的反应。将该催化剂分别用于催化还原含等物质的量NOx的两种气体:①纯NO气体,②汽车尾气。消耗NH3的物质的量较多的可能是_________(填字母),原因是_________。

A.① B.② C.都有可能

考点:氨气大气污染、改善大气质量
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Don’t complain in the NBA
The NBA has a new rule this season. It’s called “zero tolerance”. NBA referees are not letting players complain too long or too loudly about a referee’s call. A player who does can be given a technical foul (犯规). Two technical fouls, and the player is out of the game.
The players don’t like the new rule and want the NBA to change it. They think it’s only natural to get angry during a close, hard-fought game if a call goes against you.
But I like the “zero tolerance” rule and wish other sports would follow the NBA’s example. Wouldn’t it be more enjoyable if football, soccer and tennis players stopped arguing the calls and just played the game?
The biggest reason I like the new rule is that it sets a good example to younger players. When kids see stars such as Rasheed Wallace of the Detroit Pistons shouting at the referees and arguing every call, they think it’s part of the game. But shouting at referees and arguing calls should never be part of any kid’s games. Kids should be taught to forget about the referees’ calls and pay attention to improving their skills and play their best.
All players need to learn that you control only one thing in a game, and that’s your own performance. You can’t control what the other players or trainers do. And you certainly can’t control the calls the referees make.
Finally, everyone from NBA all-stars to 8-year-olds should remember that being a basketball referee is a hard job. The referee has to make dozens of sudden calls. No hesitation. No second chances. Not even the best referee gets every call right.
Maybe if the players, trainers and fans who shout at the referees had to wear a whistle and call a few games, there wouldn’t be as many complaints about the “zero tolerance” rule.
The new rule
The players are not 小题1:      to complain too much about a referee’s call,
otherwise he might be小题2:     out of the court.
The
小题3:    opinion
They dislike the new rule and wish it to be小题4:    .
They think it’s natural for them to get angry during a close game if there is a call 小题5:     against them.
The writer’s opinion
He likes the “zero-tolerance” rule and wishes it to be followed by other sports and it would be more enjoyable if players小题6:     arguing the calls.
The new rule does小题7:     a good example to younger players.
Shouting at referees and arguing calls shouldn’t be part of any kid’s games and kids should pay attention to 小题8:      their skills and play their best.
All players can control nothing else except their own小题9:     .
Everyone should keep in mind that it’s小题10:     to be a basketball judge.
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微型计算机使用的键盘上的<Backspace>键称为

A.控制键

B.上档键

C.退格键

D.功能键

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假设在封闭经济中,税率是0.25,相对于可支配收入的边际消费倾向是0.80。在“NI—AE”分析中,要使均衡国民收入增加2.5亿美元,投资需要增加()。

A.0.5亿美元

B.1亿美元

C.1.5亿美元

D.2亿美元

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特级列检作业场的有调中转作业技检时间为30min。

题型:填空题

根据归经学说,用辅料炮制药物,盐制入

A.心
B.肝
C.脾
D.肺
E.肾

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