问题
单项选择题
冷料穴底部常做成曲折的钩形或下凹的凹槽，其作用是开模时（）。
A.减少开模力
B.将塑件与浇注系统凝料分开
C.使塑件脱模容易
D.拉出主流道中的凝料
答案
参考答案：D
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冷料穴底部常做成曲折的钩形或下凹的凹槽，其作用是开模时（）。
A.减少开模力
B.将塑件与浇注系统凝料分开
C.使塑件脱模容易
D.拉出主流道中的凝料
参考答案：D
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