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下列有关旅游投诉特点的表述,错误的是( )。
同位素
某铸造厂生产的铸铁管在使用过程中经常出现裂纹,为从本质上提高铸铁管的安全性,应在铸造的( )阶段开展相关完善工作。
滴定分析中,一般利用指示剂的突变来判断化学计算点的到达,在指示剂变色时停止滴定,这一点为( )。
为了解决塔下黑的问题,建议全向天线采用()。
浅快呼吸与深慢呼吸相比较主要使( )。
《伊利昂纪》以一场大战为背景,这场大战是()
为适应知识的快速增长和人的持续发展要求而逐渐形成的教育思想和教育制度是()。
对急性阑尾炎的描述,错误的是()。
汽车合作经销商准入由()客户部门调查,有权审批人审批。
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