【单选题】超临界流体的特殊性能表现在具有液体的良好溶解性和气体的高( )。
【多选题】提高功率因数的基本方法()。
B.
提高用电设备本身功率因数,合理选择和使用电气设备
【单选题】听力原文:W: How are you getting on, White? Are you still working for the Merry Lynch Bank? M: Yes, Kitty, that's right. W: I suppose you know quite a lot about banking by now, don't you? M: Oh, yes. To te...
A.
He is interested in his work.
B.
He is proud of his work.
C.
He is tired of his work.
D.
He is keen on his work.
【判断题】电网功率因数不高,根本原因是由于电感性负载的存在,提高电路的功率因数,常用的方法是与电感性负载并联电容。
【单选题】截至 2019 年 6 月 ,2019 年中央财政农村安居工程补助资金 21.31 亿元已全部分配至各县 ( 市 ), 其中 92% 分配至贫困县。补助资金将用以保障低保户、农村分散供养特困人员、贫困残疾人家庭和建档立卡贫困户等四类“重点对象 " 存量危房改造以及深度贫困地区其他农户危房改造。这说明: 1我国维护社会公平 , 让发展成果惠及更多群众 2国家财政是健全社会保障体系、保障人民生活的...
【判断题】电网功率因数过低,将造成线路电压降增大,线路及用电设备损耗增加,同时也造成用电设备容量不能充分利用,因此,提高功率因数,也是节约用电的重要方面。
【单选题】截至 2019 年 12 月, 2019 年中央财政农村安居工程补助资金 21.31 亿元已全部分配至各县(市),其中 92% 分配至贫困县。补助资金将用以保障低保户、农村分散供养特困人员、贫图残疾人家庭和建档立卡贫困户等四类“重点对象”存量危房改造以及深度贫困地区其他农户危房改造。这说明: 1我国维护社会公平,让发展成果惠及更多群众 2国家财政是健全社会保障体系、保障人民生活的根本措施 3我...
【单选题】听力原文:W: So, you'll be getting dressed up later--before you go to the BBC television studios. M: Yes, but to tell you the truth, Mary, I prefer working in radio. W: You prefer radio? M: That's right. Y...
B.
To the television studio.
【简答题】光在______传播.真空中的光速约为______.
【单选题】听力原文:W: How are you getting on, White? Are you still working for the Merry Lynch Bank? M: Yes, Kitty, that's right. W: I suppose you know quite a lot about banking by now, don't you? M: Oh, yes. To te...
A.
He is interested in his work.
B.
He is proud of his work.
C.
He is tired of his work.
D.
He is keen on his work.