已知∠ α与∠ β互余，且∠ α=37 °，则∠ β=（ ）
53°
She smiled at me ___.
A．friendly
B．like a friend
C．as a friend
D．in a friendly way
消防隔热服断裂强力大于（）N。
A.450.0
B.500.0
C.550.0
D.600.0
