【单选题】The staff have been informed that under no circumstances______the telephone in the office for personal calls.
【单选题】焊缝布置的原则
B.
焊缝布置应尽量对称,尽量避开最大应力和应力集中部位
C.
焊缝布置应避开机械加工表面,尽量减少焊缝数量及长度、缩小不必要的焊缝截面尺寸。
【多选题】按焊缝在空间位置的不同,焊缝可以分为平焊、横焊、立焊和仰焊四种类型。对于焊缝位置的布置,下列描述正确的是( )
【单选题】Applicants for this company have to be informed of the demands peculiar to the job.
【单选题】They______informed, or they would get here on time.
【判断题】焊接结构的焊缝布置应尽量避免密集和交叉。