下图装置可用于收集气体并验证其化学性质,下列对应关系完全正确的是 气体试剂现象

题型:选择题

问题:

下图装置可用于收集气体并验证其化学性质,下列对应关系完全正确的是

 气体试剂现象结论
ANO紫色石蕊试液溶液变红NO与水反应生成硝酸
BCl2NaBr溶液溶液呈橙黄色氯的非金属性大于溴
CSO2酸性KMnO4溶液溶液褪色SO2有漂白性
DNH3MgCl2溶液产生白色沉淀NH3有碱性
 

考点:气体的收集、净化、干燥氯气的制取其他物质的制备(硫酸铜晶体、铁红等)乙烯的制取
题型:选择题

某同学在做“练习使用多用电表”的实验中:

(1)测量某电阻时,用×10Ω档时,发现指针偏转角度过大,他应该换用______档(填“×1Ω”档或“×100Ω”档),换档后,在测量前要先______.

(2)如图是多用表表盘指针在测量时的偏转位置;若测得是直流电压且量程为“50V”,则读数是______V;若测得是直流电流且量程为“10mA”,则读数是______mA.

题型:选择题
某高校教授“统计初步”课程的教师随机调查了选修该课的一些学生情况,
具体数据如下表:
非统计专业统计专业
1312
718
为了判断主修统计专业是否与性别有关,此教师说:“我经过计算,可以判定主修统计专业与性别有关系.”你认为此教师的判断错误的可能性为______.
题型:选择题

第三部分:阅读理解(共两节,满分40分)

第一节(共15小题;每小题2分,满分30分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

第一节:阅读选择(计分30)

A

Do you sometimes argue about what seems to you to be simple fact? Do you argue whether it' s cold outdoors or whether the car in front of you is going faster than the speed limit?

If you get into such arguments, try to think about the story about the six blind men and the elephant. The first blind man who felt the elephant' s trunk said it was like a snake. The second who felt the elephant's side said it was like a wall, while the third said it was like a spear as he touched the animal' s tusk. The fourth, who caught hold of the elephant's tail insisted that it was like a rope. The fifth man said it looked like a tree as he put his arms around one of the elephant' s legs. The sixth, who was tall and got hold of the elephant' s ears, said it was like a huge fan.

Each man' s idea of the animal came from his own experience. So if someone disagrees with you about a "simple fact", it' s often because his experience in the matter is different from yours.

To see how hard it is for even one person to make up his mind about a "simple fact", try this simple experiment.  Get three large bowls. Put ice water in one. Put hot water in the second. Put lukewarm water in the third. Now put your left hand in the ice water. Put your right hand in the hot water. After thirty seconds, put both hands in the lukewarm water. Your right hand will tell you the water is cold. Your left hand will tell you it's hot!

56. What makes people think about simple facts differently?

A. The fact that simple facts differ from one another.

B. The fact that people have different experience in the simple facts.

C. The fact that people often disagree with one another.

D. The fact that it' s hard to make up one's mind about simple facts.

57. The writer's advice is____.

A. we should never think about simple facts

B. we should never judge something with a one-sided view

C. we should not agree about simple facts

D. we must learn from the six blind men

58. After reading the last paragraph, we may think of ____.

A. Newton' s law               B. Galileo' s theory of falling objects

C. Einstein' s Theory of Relativity D. Marx' s On Capital

59. The main idea of this passage is ____.

A. people often judge something according to his own experience

B. people often agree about simple facts

C. it's hard for a person to make up his mind about a simple fact

D. you should not care too much about simple fact

题型:选择题

松梢螟的防治要点有哪些?

题型:选择题

砖和砌块的合格品允许出现()及以下泛霜。

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