【判断题】球阀具有如下的一些优点:流动阻力最小,开关迅速、方便,密封性能好,阀杆密封可靠,阀门通道平整光滑,不易沉积介质,可以进行管线通球。
【简答题】只有中国公民才能在我国境内申请个人汽车贷款。 ( )
【简答题】只有中国公民才能在我国境内申请个人汽车贷款。( )
【单选题】When using exponential smoothing, a smoothing constant must be used. The smoothing constant is a value that:
A.
ranges between 0 and 1
B.
ranges between –1 and +1
C.
is equal to the largest observed value in the series
D.
represents the strength of the association between the forecasted and observed values
【单选题】When is the exponential smoothing model equivalent to the naïve forecasting model?
D.
during the first period in which it is used
【简答题】只有中国公民才能在我国境内申请个人汽车贷款。( )