试题与答案

为了防止因蜡型变形而导致铸件变形,在蜡的选择上应该特别注意() A.蜡的形状 B.蜡

题型:单项选择题

题目:

为了防止因蜡型变形而导致铸件变形,在蜡的选择上应该特别注意()

A.蜡的形状

B.蜡的流动性

C.蜡的热膨胀率

D.蜡的韧性

E.蜡的脆性

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:虹膜根部离断不影响视功能时不需要治疗,只有当出现单眼复视时才有必要进行虹膜根部离断修补,故最佳答案是B。

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