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【单选题】
用已知浓度的NaOH标准溶液,滴定相同浓度的不同种弱酸时,若弱酸的Ka越大,则( )A.
消耗的NaOH标准溶液量越多
B.
消耗的NaOH标准溶液量越少
C.
滴定突跃范围越大
D.
滴定突跃范围越
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皮皮学刷刷变学霸
举一反三
【简答题】计算：2000×1999-1999×1998+1998×1997-1997×1996+1996×1995-1995×1994．
【单选题】Income
Income may be national income and personal income. Whereas national income is defined as the total earned income of all the factors of production-namely, profits, interest, rent, wages, and ot...
A.
GNP equals national income plus indirect business taxes.
B.
GNP excludes both capital consumption allowances and indirect business taxes.
C.
Personal income is regarded as the total money income received by an individual after his or her taxes are paid.
D.
The money that goes for capital consumption is not regarded as income.
【简答题】国民收入(national income)
【简答题】计算： 1996+1995×1997 1996×1997-1 + 1997+1996×1998 1997×1998-1 + 1998+1997×1999 1998×1999-1 ．
【简答题】（ 2 3 ） 1998 ×（-1.5） 1997 =______．
【简答题】计算： （1）1+2-3-m+5+n-7-x+9+…+1990-1991-1992+1993+199m-1995-199n+1997+1997=______． （2）3+n+9+12+15+…+1995+199x=______．
【简答题】国民收入(national income)
【单选题】下列算式中，（ ）的得数最大．
A.
1994×1999+1999
B.
1995×1998+1998
C.
1996×1997+1997
D.
1997×1996+1996
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