Don't spend _ time on computer games.[ ] 发布时间:2017-06-27 02:15 │ 来源:www.tikuol.com 题型:选择题 问题: Don't spend _ time on computer games.[ ]A. too much B. much tooC. too many D. many too
题型:选择题 330MW机组励磁系统接收到停机令或将调节器面板上的整流/逆变开关打到逆变位置,在满足下列条件时,逆变灭磁()。A.发电机已解列;B.定子电流小于10%;C.发电机故障无法继续运行;D.发电机需紧急停运时。 查看答案