6kV共相封闭母线的作用?
参考答案:
共相封闭母线有效地防止了绝缘遭受灰尘、潮气等污秽和外物造成的短路,另外由于母线封闭在外壳中,且外壳接地,使工作人员不会触及带电导体。
An (71) service bus (ESB) acts as a shared messaging layer for connecting applications and other services throughout an enterprise computing infrastructure. It supplements its core (72) messaging backbone with intelligent tansformation and routing to ensure that messages are passed (73) . Services participate in the ESB using either Web Services messaging standards (74) the Java Message Service. ESBs are increasingly seen by users and analysts as core components in (75) IT.
(73)处填()。
A.relying
B.rely
C.reliably
D.reliable
男性,43岁。查体脉压减小。该患者可能的诊断是()
A.甲状腺功能亢进
B.主动脉瓣关闭不全
C.主动脉瓣狭窄
D.动脉硬化
E.贫血