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【单选题】
Consider that Britain is trying to maintain a fixed exchange rate with respect to the U.S. dollar. However, the present situation in the foreign exchange market is conducive for the British pound to depreciate with respect to the U.S. dollar. Which of the following interventions will stem the pressures for depreciation of the pound?A.
The government of Britain should sell pounds and buy dollars.
B.
The government of Britain should do nothing as a fixed rate will not change.
C.
The government of Britain should buy pounds and sell dollars.
D.
The government of Britain should increase the country’s money supply.
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【单选题】有一原电池: Pt │ Fe 3+ (1 mol/L) , Fe 2+ (1 mol/L) ‖ Ce 4+ (1 mol/L) , Ce 3+ (1 mol/L) │ Pt 则该电池的电池反应是( )
A.
Ce 3+ + Fe 3+ = Ce 4+ + Fe 2+
B.
Ce 4+ + Fe 2+ = Ce 3+ + Fe 3+
C.
Ce 3+ + Fe 2+ = Ce 4+ + Fe 3+
D.
Ce 4+ + Fe 3+ = Ce 3+ + Fe 2+
【单选题】有一原电池 : - ) Pt│Fe 3+ (1mol·L -1 ) , Fe 2 + (1 mol·L -1 ) ‖ Ce 4 + (1 mol·L -1 ) , Ce 3+ (1 . mol·L -1 ) │Pt ( + ) , 则该电池的电池反应是 ( )
A.
Ce 3 ＋ + Fe 3 ＋ = == Ce 4 ＋ + Fe 2 ＋
B.
Ce 4 ＋ + Fe 2 ＋ = == Ce 3 ＋ + Fe 3 ＋
C.
Ce 3 ＋ + Fe 2 ＋ = == Ce 4 ＋ + Fe
D.
Ce 4 ＋ + Fe 3 ＋ == = Ce 3 ＋ + Fe 2 ＋
【简答题】The devices function together as the coupler which helps to improve the vertical stability of the train .In most cases ,buffer devices are included in couplers to mitigate the train jerk .They are als...
【单选题】What is the main function of the transitional devices in writing?
A.
They serve as the bridges between parts of your paper.
B.
They make your writing simple.
C.
They emphasize your main points.
D.
They help you to express your ideas in an easy way.
【单选题】有一原电池: Pt│Fe 2+ (1 mol·L -1 ) , Fe 3+ (1 mol·L -1 ) ‖ Ce 4+ (1 mol·L -1 ) , Ce 3+ (1 mol·L -1 )│Pt 则该电池的电池反应是
A.
Ce 3+ + Fe 3+ = Ce 4+ + Fe 2+
B.
Ce 4+ + Fe 2+ = Ce 3+ + Fe 3+
C.
Ce 3+ + Fe 2+ = Ce 4+ + Fe
D.
Ce 4+ + Fe 3+ = Ce 3+ + Fe 2+
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