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锉刀分（）锉、（）锉和（）锉三类。按其规格分为锉刀的（）规格和锉齿的（）规格。

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以下哪项不是中国保监会关于深化商业车险条款费率管理制度改革的意见的变化点（）。

A. 引入车型系数
B. 附加险删除了自燃损失险
C. 单列了特种车条款
D. 3年不出险的客户可以得到更大的优惠

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ZPW-2000A电码化设备室内隔离盒用来实现轨道信号与移频信号共用传输通道而互不干扰。

A. 正确
B. 错误

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除产业迎来发展机遇外，自贸区战略也将和“一带一路”战略产生良性互动。指的是（）

A. “通路通航”主题
B. “基础设施产业链”主题
C. “能源建设”主题
D. 自贸区建设主题

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When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? （）

After determining that the frequency or channel appears to be no longer in use
B. After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
C. After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
D. Routine communications can resume if，in the Master's opinion，communications on that frequency or channel will not interfere with emergency communicatio

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