FM136端子模块三种接线方法是(),有源双线,()。
参考答案:有源单线,无源双线
—I don’t have any change with me. Will you pay the bill for me?
—______.
A.That’s fine
B.Nothing serious
C.No problem
D.Never mind
套期保值是以规避现货风险为目的的期货交易行为。()