129. The illness had left her feeling tired and______.
A.strong
B.happy
C.weak
D.Hungry
答案:C
半径为13的⊙O内有一点P,OP=12,则过P点,且长度为整数的弦的条数是( )
A.2条
B.17条
C.32条
D.34条
船体在船台合拢中常见的变形有哪几种?