【多选题】下列关于电梯导轨的安装描述正确的有( )。【多选】
B.
轿厢侧导轨工作面与安装基准线每5m垂直度误差不大于0.6mm
【判断题】ADC0809 是8路8位A/D转换器,典型的时钟频率为640KHz。
【单选题】what is susan selling?
【多选题】04-85下列关于电梯导轨的安装描述正确的有( )。 [多选题]
B.
轿厢侧导轨工作面与安装基准线每5米垂直度偏差不大于0.6㎜
【单选题】Jim has been looking for his dictionary for almost an hour, and Tracy forgot to tell him that David ________it ________2 hours ago. [ ]
【单选题】Yes. I have, and, of course, they have just what Susan expected:huge blast furnaces , converters, steel ingots , billet mills plate and section mills ,miles of railway track.
【判断题】ADC0809是8路8位A/D转换器,典型的时钟频率为640KHz。( )
【单选题】Yes. I have, and, of course, they have just what Susan expected:huge blast furnaces, converters , steel ingots, billet mills plate and section mills ,miles of railway track.
【简答题】Jim:____________ Tracy: I bought this dress for my daughter last week, but____________, I’d like to change it for a larger one. Jim: Oh, I see. Well, which one would you like to take? Tracy: _________...