【判断题】对于有防冻(或防雨)要求的变松器,应安装在保温箱(或保护箱内),对于无防冻(或防雨)要求的变松器,采取支架安装方式。
【单选题】The station is the factory. [ ]
【多选题】石英晶体的压电效应与其内部结构有关,施加一定机械力后,它呈现出带电现象,那么施力者可能在( )方向加力。
【简答题】For this part, you are allowed 30 minutes to write a composition on the title Should Olympic Athletes Get High Salaries. You should write at least 120 words following the outline given below in Chines...