已知:①草酸盐受热分解易放出碳的氧化物.②500℃之前,该热重分析仪的样品池处于Ar气气氛中,500℃时起,样品池与大气相通.完成下列填空:
—Are you charging me________lying?
—But your actions aren't consistent________your words.
—No one can predict exactly.
如图,⊙O的半径为5,AB为弦,OC⊥AB,垂足为E,如果CE=2,那么AB的长是( )