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【单选题】
血液的血浆中存在很多缓冲对,其中浓度最大的是A.
H 2 CO 3 - NaHCO 3
B.
NaH 2 PO 4 - Na 2 HPO 4
C.
KH 2 PO 4 - K 2 HPO 4
D.
血浆蛋白-Na + -血浆蛋白
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举一反三
【单选题】Central-heating is one of the modern ______ the newly-built apartment building provides.
A.
impressions
B.
competitions
C.
satisfactions
D.
conveniences
【简答题】what’s the central demand of modern philosophy?___
【多选题】Financial assets and institutions are central to modern economies because________
A.
they transform the meager saving of cautious families into large investments by bold entrepreneurs.
B.
they allow workers to be capitalists, sharing in the profits of industrial giants.
C.
they manufacture liquidity and reduce all sorts of risks.
D.
they themselves can produce something like wheat, steel, or tennis shoes.
【简答题】公共仓库
【简答题】what’s the central demand of modern philosophy?___
【单选题】Modern central banking dates back to the aftermath of the Great Depression of the .
A.
1930
B.
1920s
C.
1930s
D.
1920
【单选题】The cause, frustrated teachers agree, is the growth of electronic media, as well as other modern distractions that draw students’ attention away from the focused reading that was once central to young...
A.
The growth of electronic media, as well as other modern distractions draw students’ attention away from the focused reading.
B.
The growth of electronic media, as well as other modern distractions was once central to young people’s lives.
C.
The cause is the growth of electronic media, as well as other modern distractions.
D.
Reading was once central to young people’s lives.
【单选题】All food is______.
A.
delivered to Peking House from a modern central kitchen
B.
cooked by experienced cooks from China
C.
prepared in Peking House's well-equipped kitchen
D.
served in Peking House's unique and modern kitchen
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