【单选题】—_________ has Bob been collecting stamps? —Since he was 8 years old. [ ]
【单选题】— has Bob been collecting stamps? — Since he was 8 years old. [ ]
【判断题】英制螺纹的公称直径是指内螺纹大径,并用尺寸代号表示。
【简答题】普通螺纹的公称直径是指内螺纹的 ,外螺纹的 ,内螺纹的公称直径用 代号表示,外螺纹的公称直径用 代号表示。
【单选题】How long will it take Bob to get to the party?
【简答题】鲍勃将跳远的世界纪录保持了多久? How long did Bob __________ the world __________ in the long jump?
【简答题】与外螺纹( )或内螺纹( )相重合的假想圆柱面的直径称为大径。外螺纹大径用( )表示,内螺纹大径用( )表示。
【单选题】Bob: How long have you lived here? Sue: _________.
A.
Since the beginning of the year.
D.
Only until the end of the year
【单选题】----What did Bob ask you just now? ----He wanted to know how long __________when I reached the cinema.
【简答题】内螺纹公称直径用( )表示 ; 外螺纹 公称直径用( )表示。