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{﹣1,0,1,2} {﹣1,0,1}
{﹣2,﹣1,0,1} {﹣2,﹣1,0,1,2}
{﹣2,﹣1,0,1,2} {﹣1,0,1,2} {﹣1,0,1,2,3} {﹣2,﹣1,0,1,2,3}
={x|(x﹣1)(x+2)>0},集合 ={﹣3,﹣2,﹣1,0,1,2},则A.∩B.等于( ) A.{0,1}B.{﹣3,﹣2} {﹣3,2} {﹣3,﹣2,1,2}
{﹣1,0,1} {﹣2,﹣1,0} {﹣1,1} 0,1,2}
{﹣1,0,1,2} {﹣2,﹣1,0,1} {0,1} {﹣1,0}
端口0对应:TX0=2,RX0=1; 端口1对应:TX1=4,RX1=3; 端口2对应:TX2=6,RX2=5; 端口3对应:TX3=8,RX3=7。 端口0对应:TX0=1,RX0=2; 端口1对应:TX1=3,RX1=4; 端口2对应:TX2=5,RX2=6; 端口3对应:TX3=7,RX3=8。 端口1对应:TX0=1,RX0=2; 端口2对应:TX1=3,RX1=4; 端口3对应:TX2=5,RX2=6; 端口4对应:TX3=7,RX3=8。
={x|x2-x-2≤0},集合 为整数集,则A.∩B.=( ) A.{-1,0,1,2}B.{-2,-1,0,1} {0,1} {-1,0}
{0,1,2} {﹣1,0,1,2} {﹣1,0,2,3} {0,1,2,3}
={x||x|<2}, ={–2,0,1,2},则AB= (A.){0,1} (B.){–1,0,1} ( ){–2,0,1,2} ( ){–1,0,1,2}
{﹣1} {1,2} {0,1,2} {﹣1,0,1,2}
{0,1} {﹣1,0,1} {﹣1,0,1,2} {﹣2,﹣1,0,1,2}
{1,2} {0,1,2} {0,1} {﹣1,0,1,2}
={﹣1,0,1,2}, ={x|x<2},则A.∩B.=( ) A.{﹣1,0,1}B.{﹣1,0,2} {﹣1,0} {0,1}
{2} {1,2} {0,1,2} {-1,0,1,2}
{0,1} {0,1,2} {-1,0,1} {-1,0,1,2}
{﹣1,0,1,2} {0,1,2} {1,2} {﹣1,0,1,2,3}
{-2,-1,0,1,2,3} {-2,-1,0,1,2} {1,2,3} {1,2}
{﹣1,0,1,2} {﹣2,﹣1,0,1,2} {x|﹣3≤x≤2,x∈Z} {x|﹣1≤x<4,x∈Z}
={-2,-1,0,1,2},B={x|(x -1)(x+2)<0},则A.∩B=( ) A. {--1,0} {0,1} {-1,0,1} {,0,,1,2}