题型:问答题 简答题 . The concert by Lang Lang was so well _________ that all the tickets had been _________ on the first three days last month.A.received; sold outB.recognized; sold outC.admitted; selling outD.taken; selling out 查看答案
题型:问答题 简答题 保证使用压缩空气启动装置的柴油机迅速而可靠的启动必须具备的条件是()。Ⅰ.使柴油机由静止到转动的外界能源Ⅱ.压缩空气必须具有足够压力和储量Ⅲ.启动装置中必须有两个启动空气瓶Ⅳ.能保证冷车状态下连续启动12次以上Ⅴ.供气要有一定定时和适当延续时间Ⅵ.保证柴油机能够启动的最少气缸数A.Ⅰ+Ⅱ+ⅢB.Ⅰ+Ⅲ+ⅤC.Ⅱ+Ⅲ+ⅥD.Ⅱ+Ⅴ+Ⅵ 查看答案