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【简答题】
（6分）某化学小组同学利用如图所示装置进行实验。 （1）B处放置滴有酚酞溶液的滤纸，用注射器注入少量浓氨水。一段时间后，观察到B处的现象是 。说明 氨水显 性。 （2）A处放二氧化锰，B处放木炭，C中放澄清石灰水。 实验记录： 使装置内事先充满氮气。 ②在B处点燃酒精灯，发现木炭不燃烧，澄清石灰水未变浑浊；熄灭酒精灯；关闭K（其目的是 ）。 待装置冷却至室温，取下注射器，吸入过氧化氢溶液，插入胶塞，注入液体，同时打开K，A处产生气体，发现木炭不燃烧，澄清石灰水未变浑浊。 ④然后在B处点燃酒精灯，观察到 。 其中C处发生的化学反应为 ； 此实验说明 。
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参考答案：
举一反三
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
One night a week.
B.
Every Wednesday for three hours.
C.
Every other Thursday.
D.
Three times a week.
查看完整题目与答案
【单选题】测定残余尿量,最准确的检查方法是()。
A.
膀胱区叩诊
B.
放射性核素肾图
C.
B超
D.
排尿后导尿术测定
E.
排泄性尿路造影
查看完整题目与答案
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
See her on Wednesday.
B.
Learn his part quickly.
C.
Enjoy the rehearsal.
D.
Pick her up on Thursday.
查看完整题目与答案
【简答题】选择的实质就是 ,从而定向地改变群体的遗传组成。
查看完整题目与答案
【单选题】测定残余尿量，最准确的检查方法是（）。
A.
尿常规
B.
肾功能检测
C.
X线
D.
B型超声
E.
排尿后导尿
查看完整题目与答案
【判断题】《诗经·小雅·四月》是一首苦于服役,悼念父母的诗。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
Because he is too anxious to show himself for an interview.
B.
Because he is too sure of his intelligence and concentration.
C.
Because he is interrupted by the woman yelling at him.
D.
Because he is worried for limited years of experience.
查看完整题目与答案
【多选题】对非国家工作人员行贿罪的构成要件，说法正确的是（）
A.
本罪的主体是自然人，单位不构成本罪
B.
客观方面表现为给与非国家工作人员数额较大财物的行为
C.
主观方面表现为故意
D.
侵犯的客体是市场经济秩序
查看完整题目与答案
【单选题】诈骗的意志特征不包括（）
A.
意志坚定
B.
自制力强
C.
易受外界刺激
D.
果断性
查看完整题目与答案
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
He has a lot of free time.
B.
Many of his friends are actors.
C.
She knows he likes acting.
D.
He's looking for an acting job.
查看完整题目与答案
相关题目：
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
One night a week.
B.
Every Wednesday for three hours.
C.
Every other Thursday.
D.
Three times a week.
查看完整题目与答案
【单选题】测定残余尿量,最准确的检查方法是()。
A.
膀胱区叩诊
B.
放射性核素肾图
C.
B超
D.
排尿后导尿术测定
E.
排泄性尿路造影
查看完整题目与答案
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
See her on Wednesday.
B.
Learn his part quickly.
C.
Enjoy the rehearsal.
D.
Pick her up on Thursday.
查看完整题目与答案
【简答题】选择的实质就是 ,从而定向地改变群体的遗传组成。
查看完整题目与答案
【单选题】测定残余尿量，最准确的检查方法是（）。
A.
尿常规
B.
肾功能检测
C.
X线
D.
B型超声
E.
排尿后导尿
查看完整题目与答案
【判断题】《诗经·小雅·四月》是一首苦于服役,悼念父母的诗。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
Because he is too anxious to show himself for an interview.
B.
Because he is too sure of his intelligence and concentration.
C.
Because he is interrupted by the woman yelling at him.
D.
Because he is worried for limited years of experience.
查看完整题目与答案
【多选题】对非国家工作人员行贿罪的构成要件，说法正确的是（）
A.
本罪的主体是自然人，单位不构成本罪
B.
客观方面表现为给与非国家工作人员数额较大财物的行为
C.
主观方面表现为故意
D.
侵犯的客体是市场经济秩序
查看完整题目与答案
【单选题】诈骗的意志特征不包括（）
A.
意志坚定
B.
自制力强
C.
易受外界刺激
D.
果断性
查看完整题目与答案
【单选题】Questions 11 to 14 are based on the conversation you have just heard.
A.
He has a lot of free time.
B.
Many of his friends are actors.
C.
She knows he likes acting.
D.
He's looking for an acting job.
查看完整题目与答案
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