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【单选题】
浓度为 (mol/L)的HCl和浓度为 (mol/L)的NaOH混合溶液的质子条件平衡方程为A.
[ ]=[ ]+
B.
[ ]+ =[ ]+
C.
[ ]+ =[ ]
D.
[ ]=[ ]+ +
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naming
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A.
laughed
B.
screamed
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【单选题】Among the three heroes mentioned in the second part, who was a brave white “conductor”?
A.
John Parker
B.
Levi Coffin
C.
Josiah Henson
D.
Barbara Carter
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A.
John Parker
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A.
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【单选题】下列关于标高注写的说明，错误的是( )。
A.
标高注写以米为单位;
B.
标高数值在总平面图中写到小数后2位，在其他建施和结施图中要注写到小数后3位;
C.
负数标高应注写“一”号，正数标高不注与“+”号;
D.
总平面图的标高符号与剖面图的标高符号相同，都用细实线绘制的等腰三角形表示。
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