A:∠C和∠CFG是同旁内角
B:∠CGF和∠AFG是内错角
C:∠BGF和∠A是同旁内角
D:∠BGF和∠AFD是同位角
某反应2AB(g)⇌C(g)+3D(g)在高温时能自发进行,其逆反应在低温下能自发进行,则该反应的正反应的△H、△S应为( )
I saw Linda on the street yesterday, but she didn't see me. She ________ with a woman.
哄____大____ 两____三____ 随____所____
____哉____哉 能____善____
四边形ABCD是⊙O的内接四边形,⊙O的半径为6,∠ADC=60°,则劣弧AC的长为( )