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【简答题】
（1）概念图对一些知识点进行整理，十分有用．请根据下图中的示例，在空的“□”中填写相应物质的名称．（注：pH计是一种测pH的仪器） （2）有10mL稀盐酸（其中滴有少量紫色石蕊溶液）的烧杯中加入氢氧化钠溶液，用pH计测定溶液的pH，所得数据如下．请分析并回答下列问题： 加入NaOH溶液的体积/mL 0 2 4 6 8 10 12 14 烧杯中溶液的pH 1.1 1.2 1.4 1.6 2.0 7.0 11.0 12.2 ①当加入氢氧化钠溶液的体积为13mL时，溶液显______色； ②当烧杯中溶液的pH=1.4时，溶液中的溶质有（化学式）______、______． （3）某同学想探究酸碱中和反应是放热反应．进行下列实验操作：取溶质质量分数为20%的稀硫酸30mL，用温度计测出其温度为13℃．然后向其中加入5.6gNaOH固体，恰好完全反应．再用温度计测出温度为22℃．由此，该同学得出NaOH与稀硫酸发生的中和反应是放热反应的结论．该同学所得的结论是否科学？请说明理由______．
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1989
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1992
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相关题目：
【多选题】后现代职业价值观的内涵包括()。
A.
不在意成功
B.
实现个体幸福最大化
C.
稳定压倒一切
D.
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【单选题】回答下列各： ·Read this advertisement about business book reviews． ·Choose the best sentence from the opposite page to fill each of the gaps． ·For each gap(8-12)，mark one letter(A-G)on your Answer Sheet． ·D...
A.
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B.
Discover practical tips and techniques you can apply without delay．
C.
In order to avoid this problem，we select for you only the truly worthwhile titles and reject the rest．
D.
According to studies published in psychology journals，you retain the content of a summary better than a book．
E.
He or she would take the most important ideas from each one，and compile them into a neat executive summary．
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A.
差别成本
B.
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C.
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D.
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查看完整题目与答案
【判断题】为保证药效,紫苏应久煎。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】从无到有,“平地起家”,指的是()。
A.
新建项目
B.
扩建项目
C.
改建项目
D.
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E.
迁建项目
查看完整题目与答案
【单选题】小王花了50万元在郊区买了一块土地，因为据说在路的对面要修建高档别墅区。结果传言有误，在路对面修建了一个垃圾清理场。小王的土地变得毫无价值。从与决策相关的成本角度来看，小王所花费的50万元属于()
A.
机会成本
B.
差别成本
C.
沉没成本
D.
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查看完整题目与答案
【单选题】羽毛球在哪一年成为奥运会的正式比赛项目?
A.
1986
B.
1989
C.
1992
D.
1994
查看完整题目与答案
【单选题】?Read the article below about management teams in making decisions. ?Choose the best sentence from the opposite page to fill each of the gaps. ?For each gap 8-12，mark one letter(A-G). ?Do not use any ...
A.
They must try to keep constructive conflict over issues from turning into nonfunctional interpersonal conflict.
B.
Executives Often failed to cooperate. rarely talking with one another, tending to fragment into cliques, and openly displaying their frustration and anger.
C.
Anxiety and frustration over difficult choices can evolve into anger directed at colleagues.
D.
Executives in those companies referred to their colleagues as 'smart', 'team player', and 'best In the business'.
E.
All the teams had to make high-stakes decisions in the face of considerable uncertainty and under pressure to move quickly.
F.
They managed to disagree over questions of strategic significance and still get along with one another. (8)
查看完整题目与答案
【单选题】小王花了 50万元在郊区买了一块土地,因为据说在路的对面要修建高档别墅区。结果传言有误,在路对面修建了一个垃圾清理场。小王的土地变得毫无价值。从与决策相关的成本角度来看,小王所花费的50万元属于( )
A.
沉没成本
B.
差别成本
C.
边际成本
D.
机会成本
查看完整题目与答案
【单选题】下列英译汉的例子中,哪个例子没有体现根据文化因素选择词义?
A.
“Badminton became a full sport at the Barcelona Olympics in 1992.”译成“在 1992年巴塞罗那奥运会上 ,羽毛球成为奥运会的一项正式比赛项目。”
B.
“Crown prince Fahd headed the Saudi delegation.”译成“沙特代表团团长是王储法赫德。”
C.
“Excuse me a second, I must go to the John now.”译成“不好意思，我要离开一下去上厕所。”
D.
“You really have a memory like an elephant.”译成“你记忆力真好。”
查看完整题目与答案