在国民经济核算中,GDP中有三个组成部分,即最终消费,( ),货物和服务净出口。
A.固定资本形成总额 B.存货增加C.国家投资总额 D.资本形成总额
参考答案:D
—Why does Thomas speak through every discussion but never listen to the others?
—That's what he ________ do. We used to hate that, but are used to it now.
A.ought to
B.can
C.will
D.might
离心式风机振动高的主要原因分析正确的是:()。
A、密封泄漏
B、系统阻力过大
C、转子不平衡