在有限决策模型中,决策者追求的是最大化原则。
参考答案:错
资源税适用于()。
A.比率税率
B.累进税率
C.定额税率
D.实际税率
It has been proved ___ eating vegetables in childhood helps to protect you against serious illnesses in later life.
A.if
B.because
C.when
D.that