汽轮机油系统应减少阀门接头等附件。承压等级应按试验等级高一级选用。管子壁厚不小于()。
A.0.5mm
B.1.0mm
C.1.5mm
D.2.0mm
参考答案:C
----I’ve just heard that the lecture (讲座)to be given by Ma Yun,the Alibaba CEO,has been cancelled(取消).
----Oh , no!__________ .
A.It’s wonderful.
B.It doesn’t matter.
C.I have no idea.
D.I was looking forward to that.
《法经》六篇中,有关侵犯人身安全的犯罪规定在( )。
A.盗法
B.杂法
C.具法
D.贼法