塑件推出距离与模具型芯高度和（）有关。
A.流道凝料高度
B.分流道长度
C.浇口长度
D.冷料穴
参考答案：A
----No one is so ____ about his joy as Doctor Li.
----You are right. He devotes all his time and energies to his cause.
A．mad
B．wild
C．serious
D．crazy
在公式Q＝I2Rt中，如果I的单位取A，R的单位取Ω，t的单位取s，则热量的单位为J。
