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
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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();