【简答题】请在下列程序中横线上填写适当的代码 #使用递归函数,输出斐波拉契数列的前20位 def func(num): if num==1 or num==2: return 1 else: return print("斐波拉契数列的前20位的数是:",end="") for i in range(1,21): print(func(i),end=" ")
【单选题】The foreign-currency accounts payable can be hedged by buying a __________ option on the foreign currency, whereas accounts receivable can be hedged by buying a __________ option on the foreign curren...