净现值法考虑了时间价值因素,是科学的计算方法。( )
参考答案:对
Europeans made ______ clear that they did not want to take the Romans as neighbors.
A.so
B.very
C.it
D.that
井喷是(),井喷的危害是非常严重的。
A、事故
B、事件
C、灾难性事故
D、一般性事故