声门型喉癌最早出现的症状是()。 A.喉部不适感 B.咯血 C.呼吸困难 D.声嘶 发布时间:2017-09-05 01:18 │ 来源:www.tikuol.com 题型:单项选择题 问题: 声门型喉癌最早出现的症状是()。A.喉部不适感B.咯血C.呼吸困难D.声嘶E.吞咽困难
题型:单项选择题 在“商品—货币—商品”公式中,“商品—货币”阶段的变化既重要又困难,是“商品的惊险的跳跃”。这一阶段的困难在于A.商品是否适销对路B.交易时必须是现实的货币C.买卖双方的讨价还价D.商品价格是否与价值相符 查看答案
题型:单项选择题 Language is p()in that it makes possible the construction and interpretation of new signals by its users. In other words, they can produce and understand an infinitely large number of sentences which they have never heard before. 查看答案