钢制压力容器,采用相当于双面焊的全焊透对接接头,当采用局部无损检测时,其焊接头系数应取()。
A.1.0
B.0.9
C.0.85
D.0.8
参考答案:C
—Do you think it will be fine tomorrow?
—___________. It has rained for so many days. [ ]
A. I hope not.
B. I am sure it will
C. I hope so
D. No
下列成为感染体的是()
A.HBsAg
B.HBcAg
C.HBVDane颗粒
D.管型颗粒
E.球形颗粒