I don't like the black dress. I like the ____ dress.
图上1厘米代表实地距离100千米,用数字比例尺表示是( )
— Can I use your notebook computer this afternoon? ________ is under repair.
— No problem.
若向量a→=(1,1),b→=(2,5),c→=(3,)满足条件(8a→—b→)·c→=30,则x= ( )