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【简答题】
（21分）用98%的浓H 2 SO 4 （ρ=1.84g/cm 3 ）配制 240mL0.5mol/L的稀H 2 SO 4 ，请按要求填空： （1）请写出该实验的实验步骤 ① ，② ，③ ，④ ，⑤ 。 （2）所用浓H 2 SO 4 的物质的量浓度为 ，配制时所需浓硫酸的体积为 mL。（均保留一位小数） （3）实验中需要用到的定量仪器有（包括规格） （4）若实验中出现下列 现象对所配溶液的浓度有什么影响？（填“偏高”、“偏低”或“无影响”） ①浓硫酸溶解后未室温即进行转移、。（ ） ②时俯视刻度线。（ ） （5）若时液面高于刻度线应采取的措施是 。 （6）若实验操作全部无误，最后所得的溶液应存放在试剂瓶中，并贴上标签，请你帮助把标签上的内容写一下（如右图）。
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【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation's economy would bring social chaos. In the years following 1820 after several...
A.
The economic development of the United States in the eighteenth century.
B.
Ways in which economic development led to social changes in the United States.
C.
Population growth in the western United States.
D.
The increasing availability of industrial jobs for women in the United States.
查看完整题目与答案
【多选题】导游人员在介绍他人时,应( )。
A.
先把男士介绍给女士
B.
先把女士介绍给男士
C.
先把主人介绍给客人
D.
先把客人介绍给主人
E.
先把年长者介绍给年轻人
查看完整题目与答案
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation's economy would bring social chaos. In the years following 1820, after severa...
A.
The economic development of the United States in the eighteenth century
B.
Ways in which economic development led to social changes in the United States
C.
Population growth in the western United States
D.
The increasing availability of industrial jobs for women in the Unites States
查看完整题目与答案
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation' s economy would bring about social chaos.
A.
occupied
B.
overwhelmed
C.
obliged
D.
obsessed
查看完整题目与答案
【单选题】关于血栓闭塞性脉管炎,错误的认识是
A.
一种进行缓慢的周围血管血栓闭塞性疾病
B.
主要分布于北方有长期吸烟史的男性人群
C.
病变主要累及下肢中小型动静脉，尤其是动脉
D.
同时有代常性侧支循环形成，可望不治而愈
E.
血栓闭塞性脉管炎的炎症本质是慢性非感染性炎症
查看完整题目与答案
【单选题】关于血栓闭塞性脉管炎,错误的认识是
A.
一种进行缓慢的周围血管血栓闭塞性疾病
B.
主要分布于北方有长期吸烟史的男性人群
C.
病变主要累及下肢中小型动静脉,尤其是动脉
D.
同时有代偿性侧支循环形成,可望不治而愈
E.
血栓闭塞性脉管炎的炎症本质是慢性非感染性炎症
查看完整题目与答案
【判断题】自愿地为对方承担责任是爱情的本质体现
A.
正确
B.
错误
查看完整题目与答案
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation's economy would bring social chaos. In the years following 1820, after severa...
A.
The economic development of the United States in the eighteenth century.
B.
Ways in which economic development led to social changes in the United States.
C.
Population growth in the western United States.
D.
The increasing availability of industrial jobs for women in the United States.
查看完整题目与答案
【简答题】When Franklin D. Roosevelt was elected President of the United States in 1932, not only the United States but also the rest of the world was in the throes of an economic depression. Following the term...
查看完整题目与答案
【单选题】关于血栓闭塞性脉管炎,错误的认识是
A.
一种进行缓慢的周围血管血栓闭塞性疾病
B.
主要分布于北方有长期吸烟史的男性人群
C.
病变主要累及下肢中小动静脉,尤其是动脉
D.
同时有代偿性侧支循环形成,渴望不治而愈
E.
血栓闭塞性脉管炎的炎症本质是慢性非感染性炎症
查看完整题目与答案
相关题目：
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation's economy would bring social chaos. In the years following 1820 after several...
A.
The economic development of the United States in the eighteenth century.
B.
Ways in which economic development led to social changes in the United States.
C.
Population growth in the western United States.
D.
The increasing availability of industrial jobs for women in the United States.
查看完整题目与答案
【多选题】导游人员在介绍他人时,应( )。
A.
先把男士介绍给女士
B.
先把女士介绍给男士
C.
先把主人介绍给客人
D.
先把客人介绍给主人
E.
先把年长者介绍给年轻人
查看完整题目与答案
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation's economy would bring social chaos. In the years following 1820, after severa...
A.
The economic development of the United States in the eighteenth century
B.
Ways in which economic development led to social changes in the United States
C.
Population growth in the western United States
D.
The increasing availability of industrial jobs for women in the Unites States
查看完整题目与答案
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation' s economy would bring about social chaos.
A.
occupied
B.
overwhelmed
C.
obliged
D.
obsessed
查看完整题目与答案
【单选题】关于血栓闭塞性脉管炎,错误的认识是
A.
一种进行缓慢的周围血管血栓闭塞性疾病
B.
主要分布于北方有长期吸烟史的男性人群
C.
病变主要累及下肢中小型动静脉，尤其是动脉
D.
同时有代常性侧支循环形成，可望不治而愈
E.
血栓闭塞性脉管炎的炎症本质是慢性非感染性炎症
查看完整题目与答案
【单选题】关于血栓闭塞性脉管炎,错误的认识是
A.
一种进行缓慢的周围血管血栓闭塞性疾病
B.
主要分布于北方有长期吸烟史的男性人群
C.
病变主要累及下肢中小型动静脉,尤其是动脉
D.
同时有代偿性侧支循环形成,可望不治而愈
E.
血栓闭塞性脉管炎的炎症本质是慢性非感染性炎症
查看完整题目与答案
【判断题】自愿地为对方承担责任是爱情的本质体现
A.
正确
B.
错误
查看完整题目与答案
【单选题】People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation's economy would bring social chaos. In the years following 1820, after severa...
A.
The economic development of the United States in the eighteenth century.
B.
Ways in which economic development led to social changes in the United States.
C.
Population growth in the western United States.
D.
The increasing availability of industrial jobs for women in the United States.
查看完整题目与答案
【简答题】When Franklin D. Roosevelt was elected President of the United States in 1932, not only the United States but also the rest of the world was in the throes of an economic depression. Following the term...
查看完整题目与答案
【单选题】关于血栓闭塞性脉管炎,错误的认识是
A.
一种进行缓慢的周围血管血栓闭塞性疾病
B.
主要分布于北方有长期吸烟史的男性人群
C.
病变主要累及下肢中小动静脉,尤其是动脉
D.
同时有代偿性侧支循环形成,渴望不治而愈
E.
血栓闭塞性脉管炎的炎症本质是慢性非感染性炎症
查看完整题目与答案