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【多选题】
R1R2的电阻分别为5Ω和10Ω,把它们串联在电路中,则下列说法正确的有A.
1和R2两端的电压之比是1:2
B.
过R1R2的电流之比是1:2
C.
1R2的功率之比是1:2
D.
效电阻为15Ω
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举一反三
【单选题】If short-run equilibrium in the Mundell-Fleming model is represented by a graph with Y along the horizontal axis and the exchange rate along the vertical axis, then the LM* curve:
A.
slopes upward and to the right because at a higher income a higher interest rate is needed to increase velocity.
B.
is vertical because monetary velocity is independent of the interest rate.
C.
is vertical because the exchange rate does not enter into the LM * equation.
D.
slopes upward and to the right because a higher exchange rate leads to a higher income.
【单选题】A strong El Nino is often associated with wet winters over the southern U.S., as well as drought in Indonesia, Philippines and Australia.
A.
Y
B.
N
C.
NG
【单选题】The equation of exchange states that the quantity of money multiplied by the number of times this money is spent in a given year must equal
A.
nominal income.
B.
real income.
C.
real gross national product.
D.
velocity.
【单选题】A country's domestic policies ______.
A.
can not be forcibly changed by the U.N.
B.
are often investigated by the U.N.
C.
are often enforced by the U.N.
D.
are not allowed to benefit from U.N. advice or assistance
【单选题】Keynes’s hypothesized that the speculative component of money demand was primarily determined by the level of
A.
interest rates.
B.
velocity
C.
income.
D.
stock market prices.
【单选题】某吸收过程,已知气膜吸收系数 k Y 为 4×10 -4 kmol/(m 2 · S), 液膜吸收系数 k X 为 8×10 -4 kmol/(m 2 · S), 由此可判断该过程:
A.
气膜控制
B.
液膜控制
C.
. 双膜控制
D.
判断依据不足
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