已知"所有S都尼P"为假，请用欧拉图表示s和P之间的各种关系，并举出实例。

A、串联滞后校正

B、串联超前校正

C、前馈校正

D、比例控制

A、6

B、4

C、5

D、2

A、固有频率

B、频率特性

C、响应时间

D、阻尼比

a．这一年帕丘尼亚的国际收支余额是多少？该国的净国外资产发生了什么变化？

b．假设外国中央银行既不买入也不售出帕丘尼亚的资产。2002年帕丘尼亚中央银行的外汇储备有什么变化？这项官方干预行为如何在帕丘尼亚的国际收支账户中反映出来？

c．如果已知2002年外国中央银行购入了6亿美元的帕丘尼亚资产，你将如何回答(b)的问题？这些官方购买如何记入外国的国际收支账户？

d．假定(c)中的情况在2002年发生，写出帕丘尼亚该年的国际收支账户。

The nation of Pecunia had a current account deficit of ＄1 billion and a nonreserve financial account surplus of ＄500 million in 2002，

a．What was the balance of payments of Pecunia in that year？ What happened to the country's net foreign assets？

b．Assume that foreign central banks neither buy nor sell Pecunian assets．How did the Pecunian central bank's foreign reserves change in 2002？ How would this official intervention show up in the balance of payments accounts of Pecunia？

c．How would your answer to (b) change if you learned that foreign central banks had purchased $600 million of Pecunian assets in 2002？ How would these official purchases enter foreign balance of payments accounts？

d．Draw up the Pecunian balance of payments accounts for 2002 under the assumption that the event described in (c) occurred in that year．

A、x1=f, x2=y

B、x1=K, x2=y

C、x1=F, x2=f

D、

A.ξ=0.6

B.ξ=1.2

C.ξ=1.8

D.ξ=3.6