钢筋闪光对焊时当钢筋直径超过标准规定范围内，钢筋端面较平整，宜采用（）
A、连续闪光焊
B、预热闪光焊
C、闪光-预热闪光焊
D、电阻点焊
参考答案：B
______ the fantastic sight, I stayed at the top, _______.
A．This was ; watching
B．Because this was ; watched
C．Not having seen; watching
D．Having not seen; |watched
中年女性，最可能的诊断为()
A．心旁结节
B．内乳动脉动脉瘤
C．淋巴瘤
D．肺癌
E．以上都不是
