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【简答题】
10mol/L的H 2 A(pK a 1 =2，pK a 2 =4)溶液以0.10mol/L NaOH标准溶液滴定，将出现______个滴定突跃，化学计量点时溶液的pH值为______。
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反馈参考答案：
举一反三
【单选题】______their differences, the couple were developing an obvious and genuine affection for each other.
A.
But for
B.
For all
C.
Above all
D.
Except for
【单选题】The old couple were not rich themselves, but they hated to turn away anyone who were ______food and shelter.
A.
at the mercy of
B.
on the point of
C.
with the exception of
D.
in need of
【简答题】关于力矩,下面哪种说法是不正确的( ) A.力矩的计算式为M(F)=Fd B.若力的作用线通过矩心,则力矩等于零 C.力沿其作用线移动时,力矩不变 D.力矩的值与矩心有关
【单选题】____ their difference, the couple were developing an obvious and genuine affection for each other.
A.
But for
B.
For all
C.
Above all
D.
Except for
【单选题】关于力矩，下面()说法是错误的。
A.
力矩的计算式为M(F)=Fd
B.
若力的作用线通过矩心，则力矩等于零
C.
力沿其作用线移动时，力矩不变
D.
力矩的单位是N-m
【单选题】根据《会计从业资格管理办法》规定，持证人员从事会计工作，应当自从事会计工作之日起( )内，向会计从业资格管理部门办理注册登记。
A.
15日
B.
30日
C.
60日
D.
90日
【单选题】根据会计从业资格管理办法规定,从事会计工作的人员必须( )。
A.
持有会计专业本科毕业证书
B.
持有高中毕业证书
C.
持有会计从业资格证书
D.
具有注册会计师执业资格
【单选题】______ their differences, the couple were developing an obvious and genuine affection for each other.
A.
But for
B.
Above all
C.
Except for
D.
For all
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