千斤顶不允许在（）的情况下使用。
A.超载
B.超过行程范围
C.垂直
D.水平
E.几台同用
参考答案：A, B
Only _____ a human being. [ ]
A. when is it hungry a lion will attack
B. when it is hungry a lion will attack
C. when it is hungry will a lion attack
D. when is it hungry will a lion attack
简述生产上卤虫休眠卵孵化的基本操作过程。
