CH3CH2C(CH3)2C(CH2CH3)2CH3.
在棱长为1的正方体ABCD-A1B1C1D1中,则平面AB1C与平面A1C1D间的距离( )
臣,而唯擢小臣。多召见才俊之士,不必加其官,而唯委以差事,赏以卿衔,准其专折奏事
足矣。”这段话最能反映维新派在变法中的态度是()
下列关于力的说法,错误的是( )
Has Kate gone to the museum? Yes, not only she but also her mother ____ gone to the history museum.