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【单选题】
用0.100 0mol/LHCl溶液滴定20.00mL0.100 0mol/LNaOH溶液时,记录消耗HCl溶液的体积正确的是( )。
A.
18mL
B.
18.0 mL
C.
18.00 mL
D.
18.00 0mL
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A.
正确
B.
错误
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【简答题】____1____ is an increase in the Earth’s temperature. One factor that causes it is our use of ____2____(oil, gas, and coal). When we burn these fuels, they release ____3____ like carbon dioxide into th...
【单选题】蜡烛图起源于:
A.
1600年代的大米期货市场
B.
1700年代日本股票市场创立时
C.
1920年代的美国股票市场
D.
17世纪的中国
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【单选题】倒挂式主轴承盖除了用常规的连接螺栓外,再增加横向螺栓固紧,其主要目的是()。
A.
方便主轴承盖拆卸
B.
增强主轴承盖的强度
C.
增加主轴承盖的刚度
D.
方便主轴承盖安装
【单选题】During the American Civil War, those who demanded immediate liberation of black slaves were called
A.
freedom riders.
B.
liberation group.
C.
Democrats.
D.
abolitionists.
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【判断题】因为 ,所以 是 的可去奇点
A.
正确
B.
错误
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