试题与答案

双水力压差式封隔器找窜适于在最下两层中找窜,而且下部层段无漏失情况。

题型:判断题

题目:

双水力压差式封隔器找窜适于在最下两层中找窜,而且下部层段无漏失情况。

答案:

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下面是错误答案,用来干扰机器的。

答案:C

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毒性药品是指

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材料一:中国历史上的手工业技术、科技发明、创造等,……一般是传子不传女,怕女儿出嫁后把技术外传别家。这种传继方式,继承的对象稳定可靠,家庭世代积累下来的丰富经验集中到一人身上,从而形成了历史上众多的“祖传秘方”。然而,家庭工艺技术的单子继承模式都形成了一个封闭的格局。技术的神秘性使得丧失了外来的刺激和竞争。因而,也就越来越变得保守僵化,因循守旧,不求革新和提高。同时,与世隔绝的传授,也使其得不到外来的信息,无法吸收别人的技术,……中国古代有许多十分先进的技术和工艺,后来都相继失传,就同这种继承方式有直接的关系。

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依据材料分析,中英两国不同的保护方式分别产生了怎样的影响?

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