______ can also protect domestic currency from the impact of for

______ can also protect domestic currency from the impact of foreign idle funds and helps to prevent the drain of foreign exchange reserve.
A、Fixed exchange rate
B、Flexible exchange rate
C、Direct exchange
D、Indirect exchange
【正确答案】：B
【题目解析】：Flexible exchange rate can also protect domestic currency from the impact of foreign idle funds and helps to prevent the drain of foreign exchange reserve.
参见教材P229。