头尾轮、增面轮安装不正可导致皮带在运转过程中（）。
A.打滑
B.跑偏
C.急停
参考答案：B
企业战略的构成要素是什么？
（）for many years，the AB passed the examination and became an officer.
A.Having ignored him
B.To have been ignored
C.To be ignored
D.Having been ignored
