题目内容
(请给出正确答案)
[主观题]
Most companies need to understand more about how customers behave.()
提问人:网友sheepdog79
发布时间:2022-01-07
A、A fact
B、A key word
C、A story
D、An opinion
Given the following information, calculate, the pooled sample variance that should be used in the pooled-variance t test.n1 = 16, n2 = 25.
A、
B、
C、
D、
A、climate
B、existing facilities
C、sunlight
D、soil
E、vegetation
F、fund available
B.所需传质单元数不变,填料层高度降低
C.所需传质单元数减少,填料层高度不变
D.所需传质单元数不变,填料层高度不变
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