智能电网建成后,将形成结构坚强的受端电网和送端电网,电力承载能力显著加强,形成()的特高压输电网络,实现大水电、大煤电、大核电、大规模可再生能源的跨区域、远距离、大容量、低损耗、高效率输送,区域间电力交换能力显著提升
A. 强交、强直
B. 弱交、弱直
C. 强交、弱直
D. 弱交、强直
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LKJ系统设备实行CRCC认证管理,必须使用()批准的型号。
地下有限空间内存在积水、污物的,应先在地下有限空间外利用工具进行充分搅动,待气体充分释放后()。
A. 再进行检测
B. 进入有限空间
C. 判定环境级别
In a central cooling system, used in some modem ships, sea water is supplied to cool ()which will circulate to other individual cooler, greatly reducing the corrosion problems.
A. fresh water
B. sea water
C. cooling oil
D. emulsio
1. public class enclosingone ( 2. public class insideone{} 3. ) 4. public class inertest( 5. public static void main (string[]args)( 6. enclosingone eo= new enclosingone (); 7. //insert code here 8. ) 9. ) Which statement at line 7 constructs an instance of the inner class?()
A. InsideOnew ei= eo.new InsideOn();
B. Eo.InsideOne ei = eo.new InsideOne();
C. InsideOne ei = EnclosingOne.new InsideOne();
D. EnclosingOne.InsideOne ei = eo.new InsideOne();