Until then, his family ____ from him for six months.
关于期货合约,以下表述错误的是( )。
Until then, his family ____ from him for six months.
有人说:““一国两制’吸纳了联邦制的包容性优点,从而具备了一般单一制国家结构模式所没有的柔性特征。”“一国两制”和美国联邦制相比,两者的共同点是( )。
下列关于流动性比例的叙述中,错误的是( )。