【单选题】发电厂和变电所的直流系统的作用是作为()之用
【简答题】完形填空。 I was first officer at an airline. One Christmas Eve, I was checking instruments in 41 for my last flight of the day 42 I heard a noise behind me. I looked 43 my shoulder. Just outside the cockp...
【多选题】火力发电厂高压厂用电系统中性点的确定,以下正确的是( )。
B.
由高压厂用电系统供电的一台低压厂用工作变压器高压侧的中性点;
D.
由高压厂用电系统供电的两台低压厂用工作变压器高压侧的中性点。
【单选题】对发电厂厂用电系统,下列描述错误的是( )。
B.
当有发电机电压母线时,厂用高压工作电源可从母线处引接
C.
当发电机和主变采用单元接线时,事故保安电源从发电机出口引接
D.
高压厂用备用电源可从联络变压器低压绕组处引接
【单选题】某梁平法施工图中 KL1 ( 3 )集中标注中出现“ N6 prefix="v" ns="urn:schemas-microsoft-com:vml" prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> ?xml:namespace> 16 ”表示 。
D.
以上全不正确 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】民生是人民幸福之基、社会和谐之本。带领人民群众创造幸福生活,要顺应人民群众对美好生活的向往,必须坚持的发展思想和重点是
【单选题】听力原文: I was a freshman in law school. In a few years I would be out in practice. I was well aware of the importance of the right kind of wife in furthering a lawyer's career. Successful lawyers were, ...