闪光对焊焊件伸出长度一般为焊件直径的( )倍。
A.0.5
B.0.7~1
C.1.5
D.2
参考答案:B
24小时pH监测最常用于()
A.Barrett食管
B.贲门失弛缓症
C.食管平滑肌瘤
D.不典型增生
E.反流性食管炎
All of the following are inputs to risk identification EXCEPT______.
A.risk management plan
B.project management plan
C.workaround plan
D.project scope statement