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【单选题】
物质的量浓度相同的200mL Ba(OH) 2 溶液和150mL NaHCO 3 混合后，最终溶液中离子的物质的量浓度关系正确的是A.
c(OH － )>c(Ba 2+ )>c(Na + )>c(CO 3 2 － )
B.
c(OH － )>c(Na + )>c(Ba 2+ )>C(H + )
C.
c(OH － )=c(Ba 2+ )+c(Na + )+c(H + )
D.
c(H + )+c(Na + )+2c(Ba 2+ )=c(OH － )
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举一反三
【单选题】The short-run Phillips curve and the long-run Phillips curve intersect at the ( ) and ( ).
A.
expected inflation rate; the expected unemployment rate
B.
expected inflation rate; the natural unemployment rate
C.
natural inflation rate; the expected employment rate
D.
expected inflation rate; the expected employment rate
【简答题】Question 7 What is the Phillips curve? What does it purport to show? Why might we be interested in the relationship suggested by the Phillips curve? Explain.
【单选题】According to the Phillips curve:
A.
there is no tradeoff between inflation and unemployment.
B.
if inflation increases, so does unemployment.
C.
increases in unemployment are associated with a rise in prices.
D.
there is a short-run tradeoff between inflation and unemployment.
【单选题】噻嘧啶的主要作用机制是
A.
抑制虫体胆碱酯酶，使虫体痉挛性麻痹，不能附壁
B.
干扰虫体的多种生化代谢途径，干扰虫体生存繁殖
C.
直接杀灭幼虫
D.
干扰虫体的呼吸酶系统，抑制虫体需氧代谢
【单选题】在 碘 量 法 中, 为 了准 确 测 定 Cu , 必 须 加 入 KCNS , 加 入 KCNS 溶 液 时 要 在 :
A.
酸 化 后;
B.
滴 定 至 一 半 后;
C.
近 终 点 时;
D.
什 么 时 候 均 可
【单选题】According to 'Phillips curve', unemployment is ______ wage inflation.
A.
irrelevant to
B.
positively correlated with
C.
negatively correlated with
D.
affected solely by
【单选题】The Phillips Curve implies that the cost of reducing inflation is______.
A.
increasing government deficits
B.
rising unemployment
C.
increasing foreign trade deficits
D.
rising interest rates
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