如图所示，矩形均匀薄板长AC=60 cm，宽CD=10 cm，在B点以细线悬挂，板处于平衡状态，AB=35cm，则悬线和板边缘CA的夹角α=____。
45°
—Tom can't find his gloves. Are these blue gloves his?
—No, they _ be his. His gloves are black.
A．must
B．may
C．can't
D．mustn't
铁路客运全部运输费用包括（）
A.旅客票价
B.客运运价
C.客运杂费
D.行李、包裹运价
