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形状复杂的零件毛坯(如壳体)应选用()
In every cultivated language, there are two great classes of words which, taken together, comprise the whole vocabulary. First, there are those words(1)which we become acquainted in daily conversation, which we(2),that is to say, from the(3) of our own family and from our familiar associates, and(4) we should know and use (5 )we could not read or write. They (6) the common things of life, and are the stock in trade of all who (7) the language. Such words may be called“popular”, since they belong to the people (8) and are not the exclusive (9) of a limited class. On the other hand, our language (10) a multitude of words which are comparatively (11) used in ordinary conversation. Their meanings are known to every educated person, but there is little (12) to use them at home or in the market-place. Our (13) acquaintance with them comes not from our mother's (14) or from the talk of our school-mates, (15) from books that we read, lectures that we (16) ,or the more (17)conversation of highly educated speakers who are discussing some particular (18) n a style appropriately elevated above the habitual(19) f everyday life. Such words are called“learned”, and the (20) between them and the“popular”words is of great importance to a right understanding of linguistic process. 请在13处填上正确答案()
《铁路技术管理规程》(高速铁路部分)防护网安装完毕,打开车门后,由列车长组织()值守,直到车门关闭。
ASME锅炉及压力容器规范第Ⅺ卷验收标准包括:()
安装在烟囱顶上的避雷针直径不应小于下列数值()
下列选项中,属于直接引起坠落的客观危险元素的情形有( )。
下列骨折类型中,最不稳定的是()
男性患者,30岁。确诊哮喘入院治疗3周,经正规治疗后病情缓解,仅偶有胸闷,患者应严禁用下述哪种药物( )。
原发性骨肿瘤的发生率为()。
什么是驳船?如何分类?
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加强了人体前、后、侧面的统一联系的是( )。
加强了人体前、后、侧面的统一联系的是( )。
加强了人体前、后、侧面的统一联系的是()
人体直立姿势正常侧面观是:过头顶正中的矢状线和脊柱、两足间应在同一矢状面上;两肩峰、两髂嵴上缘应对称分位于两边
在四肢部,阴经循行于()侧面,阳经循行于()侧面
TAM既增强了上行覆盖,也增强了下行覆盖。
配电箱内闸具侧面之间或侧面与盘面排列间距在()mm以上。
实际侧面限界与标明的侧面限界之差不得大于(),且实际侧面限界不得小于《铁路技术管理规程》规定的最小值。
在河道直段侧面引水时,进口的侧面引水环流,导致()进入渠道,当引水比超过50%时,河道的泥沙几乎全部进入渠道。
正面、斜侧面、侧面、背面构图各有什么特点?