金属板被弯曲后,在弯曲的位置就会产生折损。
参考答案:对
-- Do you mind if I keep pets in this building?
--- ___________.
A.Yes, I love pets
B.Of course not. It’s not allowed here
C.I’d rather you didn’t, actually
D.No, you can’t
油中水分和油中溶解气体分析取样油样允许留有死体积()