熔断器主要用于用电设备的短路保护,只要额定电压和额定电流选择得当,熔断器可以互换或替代使用。
参考答案：错
—It is said that he is focusing on another book on space exploration. When will it come out?
—It is _______ next year.
A．about to be published
B．surely to be published
C．due to be published
D．going to publish
项目在整个计算期内各年净现金流量现值累计等于零的折现率称为（）。
A.投资利润率
B.投资利税率
C.财务净现值率
D.财务内部收益率
