焊缝与被焊工件串联的接头，焊缝传递全部荷载，这种焊缝被称为（）。
A．联系焊缝
B．承载焊缝
C．传递焊缝
D．串联焊缝
参考答案：B
No one had told Smith about ________a lecture the follow-ing day. [ ]
A. there be
B. there being
C. there would be
D. there was
刺激生长素分泌的代谢因素中，作用最强的是
A．低血糖B．高血糖C．低血脂D．高血脂
