The characteristics of potential course itself determine that it has the functions of knowledge guidance, emotional edifying and behavior criterion.
潜在课程本身的特点决定了它具有认识导向功能、情感陶冶功能、行为规范功能。
On the issues of premise presumption, value criterion and evaluation yardstick, the three ways present utterly different characteristics.
在前提假设、价值标准、评价尺度等问题上，三种方式表现出了迥然相异的特点。
AC argon arc welding is used for the repair according to the leakage check and welding characteristics of aluminum materials, hardware device is strengthened, operation criterion are perfected.
采用的查漏方法，根据铝材的焊接特点选择交流氩弧焊进行修复，并采取增加硬件设施和完善操作规范的预防措施。
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