与细菌致病性有关的结构或成分除外( )
A．菌毛B．核蛋白体C．荚膜D．鞭毛E．磷壁酸
参考答案：B
I have no________with people who are always complaining of their misfortunes.[ ]
A．devotion
B．belief
C．patience
D．balance
为什么给水泵采用平衡鼓？
