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【单选题】
理想低通滤波器是A.
因果系统
B.
物理可实现系统
C.
非因果系统
D.
响应不超前于激励发生的系统
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皮皮学刷刷变学霸
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【单选题】The U.S. dollar was designated as the international currency in international settlements under the Bretton Woods system. The dollar was accepted by the rest of the world because __________.
A.
it could be used to purchase U.S. goods and services
B.
it could be converted to gold at a price of $35/ounce
C.
the U.S. was the only super power at that time
D.
the IMF forced the rest of the world to use dollar to settle international debts
【简答题】写出以下程序的运行结果。 class MyException extends Exception{ private int detail; MyException( int a ){ detail = a;} public String toString( ){ return "MyException "+detail; } } public class ExceptionDemo{...
【简答题】运行下面的程序并写出运行结果,体会内部类的形式 //定义外部类Outer class Outer20 { static int m = 0; // 定义外部类静态变量m static class Inner { void show() { // 静态内部类访问外部类静态成员 System. out .println( "外部类静态变量m=" + m ); } } } //定义测试类 public ...
【判断题】Under the Bretton Woods system, the U.S. dollar was pegged to gold at $38 per ounce and other currencies were pegged to the U.S. dollar
A.
正确
B.
错误
【简答题】Passage 6 The U.S. dollar was supposed to be at the end of its rope. Kicking the bucket. A dying symbol of a dying empire. Well, maybe not. The dollar continues to _1_ gloom-and-doom predictions. Afte...
【简答题】对于溶解于海水中的各种离子或分子,通常根据其含量区分为常量元素和微量元素。常量元素在海水中的浓度一般高于( )mmol/kg。
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