等边三角形绕着它的中心至少旋转( )度后能与自身重合.
120
Miss Green has _______ free time than Mr Green. She is busy all day.
A.much
B.less
C.more
D.fewer
热灼伤后尽快用冷水冲洗10-15分钟降低灼伤处的温度。