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（10分）如图所示，横坐标表示通入气体或加入试剂的体积，纵坐标表示产生沉淀的物质的量。适合下列各种情况的分别填入该题后（填图的字母代码）。 （1）向石灰水中通入二氧化碳_________。 （2）向氯化铝溶液中滴入NaOH溶液_________。 （3）向偏铝酸钠溶液中加入稀盐酸_________。 （4）向盐酸和氯化铝混合溶液中逐滴加入氢氧化钠溶液_________。 （5）向MgCl 2 和AlCl 3 混合液中加入过量的NaOH溶液_________。 （6）向MgCl 2 和AlCl 3 混合液中先加NaOH溶液后，至沉淀不再溶解，加HCl溶液_________。 （7）向AlCl 3 溶液中加氨水_________。 （8）向NaAlO 2 溶液中通入CO 2 气体_________。 （9）向KAl(SO 4 ) 2 中滴加Ba(OH) 2 _________。 （10）向Al 2 (SO 4 ) 3 中滴加NaAlO 2 溶液_________。
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【单选题】What can you infer about some phone carders from the passage?
A.
They want to get additional download profit from teenagers.
B.
They are faced with intense competition in the market now.
C.
They try to expand the sales of phones among adult users.
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They provide some free minutes for the young people.
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【单选题】The big question that faces Doppelganger is
A.
whether they Can get additional venture capital from investment banks．
B.
whether they Can increase revenue from selling music downloads and band．related goods．
C.
whether they carl find suppliers to sell physical things in the Lounge．
D.
whether they Can develop a critical mass of users and attract mass．market advertisers．
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【判断题】横波只能在固体内传播。
A.
正确
B.
错误
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【单选题】需用大型设备配套进行上部结构安装的施工方法是( )
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就地浇筑法
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悬臂浇筑法
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【简答题】简述有效沟通的四个技巧。
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【单选题】49
A.
Lindbergh used this additional training to get a job as an airmail pilot, flying out of St. Louis, Missouri
B.
Working with an aviation company from San Diego, California,and with financial help from the city of St. Louis, Lindbergh got a customized(定制的)airplane that could make the journey
C.
He also received a Medal of Honor,the highest United States military decoration
D.
Eighty years ago,radio and movies were just beginning to have that kind of effect on Ameri- cans
E.
His childhood was not full of fond memories
F.
He quit school and moved to Nebraska where he learned to be a pilot
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A.
Lindbergh used this additional training to get a job as an airmail pilot, flying out of St. Louis, Missouri
B.
Working with an aviation company from San Diego, California,and with financial help from the city of St. Louis, Lindbergh got a customized(定制的)airplane that could make the journey
C.
He also received a Medal of Honor,the highest United States military decoration
D.
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His childhood was not full of fond memories
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查看完整题目与答案