【判断题】用兆欧表测量火花塞绝缘电阻,电阻值应为10MΩ或更大。
【单选题】The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 8. The typical seasonal index for period 8 is 0.80. What are the forecast sales for period 8?
【单选题】A company's annual profits have a trend line given by Y = 20t – 10, where Y is the trend in $'000 and t is the year with t = 0 in 20X0. What are the forecast profits for the year 20X9 using an additiv...
【单选题】用兆欧表测量火花塞绝缘电阻,电阻值应为( )MΩ或更大。
【判断题】焊锡时产生的烟雾对人体有害,所以在焊接时要使用抽风装置,抽走焊锡产生的烟雾,避免烟吸入鼻孔。
【判断题】面积式电容传感器,按照极板的形状,极板运动的方式,可以分为不同的类别,最常见的长方形极板,进行左右的横行移动,一般用来测量位移;扇形极板,进行旋转运动,一般用来测量角度;圆柱形极板,进行上下运动,移动测量位移。
【多选题】按照调查范围不同,从业人员和工资总额报表分为