【单选题】根据经验,万吨级船舶倒车制速中,在顶流较大水域()。
A.
当倒车排出流水花达到船首时,船舶对地漂移速度约为流速
B.
当倒车排出流水花达到船首时,船舶对地速度约为0
C.
当倒车排出流水花达到船中时,船舶对地漂移速度约为流速
D.
当带车排出流水花达到船中时,船舶对地速度约为0
【单选题】关于钢筋焊接接接头检验批弯曲试验结果,不正确的是()
A.
弯曲试验后,观测试件的外侧(含焊缝和热影响区)是否发生破裂
B.
发生宽度达到0.6mm的裂纹时,则认定“破裂”
C.
发生宽度达到0.5mm的裂纹时,则认定“未破裂”
D.
发生宽度达到0.4mm的裂纹时,则认定“未破裂”
【单选题】In what ways are unions and large companies similar?
A.
Both have too many managers.
B.
Both have problems in passing on information.
C.
Both lose touch with individual workers.
D.
Both their managements are too powerful.
【单选题】听力原文:(A) The man is speaking to the children. (B) The man is holding both children in his arms. (C) Some people are walking outside. (D) Some people are climbing the mountain.
【单选题】关于检验批钢筋焊接接头弯曲试验,下列判定不正确的是()
A.
当有1个试件发生破裂,应评定该批接头弯曲试验合格
B.
当有3个试件发生破裂,应评定该批接头弯曲试验不合格
D.
当复验时有2个试件发生破裂时,应判定该批接头为不合格品
【单选题】Both fuel oils and lubricating oils require ( ) before passing to the engine.
【单选题】钢筋闪光对焊接头弯曲试验时,当试验结果3个试件发生宽度达到0.5mm的裂纺,以下对结果评定说法正确的是()。