不属于变速器箱体损伤的是（）.
A.螺纹孔的焊修
B.轴承安装孔的磨损
C.轴承座安装孔的磨损
D.箱体变形
参考答案：B
The magazine was started by Becky, ______ I know.
A．as far as
B．as well as
C．as soon as
D．as much as
石油产品抵抗热影响，其性质不发生永久变化的能力称为（）
A.热氧化安定性
B.氧化安定性
C.热安定性
