题目内容
（请给出正确答案）
提问人：网友Hawayi
发布时间：2022-01-07
[主观题]
When the actual purchase price is higher than the standard purchase price, ______variance will be incurred.
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
抱歉！暂无答案，正在努力更新中……
When can the purchaser get 30% credit toward a new pair of sneakers？
A．One month after purchase.
B．When the guaranty expires and the manufacturer admits there is a defect in workmanship.
C．Two years after purchase.
D．Before the guaranty expires only.
,
,
, (1) when actual center distance
, find meshing angle
and pitch circle
. (2) when meshing angle
, find actual center distance
，pitch circle
. (3) compare the ratio of
for the above two cases.
