造成滑行的原因不包括（）。
A、闸瓦压力大于制动力
B、轨面上有霜、雪、油脂
C、粘着力降低
D、制动缸鞲鞴行程长
参考答案：D
--- Who _______________ the question?
--- The girl who was standing beside me. We were ____________ in the question.
A．came up; interesting
B．came up with; interesting
C．came up; interested
D．came up with; interested
简述产蛋鸡的营养需要特点？
