[A] paralleled

[B] counteracted

[C] duplicated

[D] contradicted

[单选题]A．n alternator is being paralleled with one on the line At the instant the circuit breaker is close, the frequency of the incoming alternator will normallyA．increaseB．not changeC．decreaseD．be exactly 60 hertz

[单选题]When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will （）.A . pick up more of any increase in loadB . pic

[单选题]When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will .A．pick up more of any increase in loadB．pick up le

[单选题]化简(A-B-C) ∪(A-B) ∩C) ∪(ANB-C) ∪(A∩B∩C) =(62)。A．A∩BB．B∩CC．AD．B

[单选题]模式R({A,B,C}，{(A,C)→B，(A，B)→C，B→C})属于最高范式的是(43)。A．1NFB．2NFC．3NFD．4NF

[单选题]有如下程序： a=1:b=2:c=3 a=a+b:b=b+c:c=b+a If a＜＞3 Or b＜＞3 Then a=b-a:b=C-a:C=b+a End If Print a+b+c 运行后，输出的结果是( )。A．16B．3C．6D．8

[问答题]设(a×b)·c=2，则[(a+b)×(b+c)]·(c+a)=--------------.

[问答题]设(a×b)·c=2，则[(a+b)×(b+c)]·(c+a)=--------------.

[问答题]设(a×b)·c=2，则[(a+b)×(b+c)]·(c+a)=------------.

[主观题]三个 float a,b,c;问值（a+b）+c==(b+a)+c， (a+b)+c==(a+c)+b。(Intel)