单项选择题
风电机组操作人员进入轮毂前要锁定()A.联轴器B.齿轮箱C.发电机D.叶轮锁
单项选择题风电机组操作人员进入轮毂前要锁定()
Vestas是个国家的风电机组品牌()A.丹麦B.德国C.美国D.日本
单项选择题Vestas是个国家的风电机组品牌()
Mr. Fisher presented the Treasurer’s Report, which was ...
未知题型Mr. Fisher presented the Treasurer’s Report, which was then unanimously approved everybody is still wasting their time.