若|AF|过大，正弦波振荡器会出现（）现象。
A、A.不起振
B、B.起振后停振
C、C.输出矩形波
D、C.输出正弦波

单项选择题An Italian bank enters into a 6-month forward contract with an importer to sell GBP 80 million in 6 months at a rate of EUR 1.13 per GBP 1. If in 6 months the exchange rate is EUR 1.12 per GBP 1, what is the payoff to the bank from the forward contract?（ ） A.EUR -800,000B.EUR -400,000C.EUR 400,000D.EUR 800,000

单项选择题电子邮箱为lisa（）White@sina