已知逻辑电路如图7.5-5所示,经分析可知,输出F与输入信号X、Y之间的逻辑表达式为()。
A.
B.
C.
D.
参考答案:A
The wireless video camera is ________to send its video signal to a nearby base station,allowing it to be viewed on a computer or a television.
A.persuaded
B.pretended
C.intended
D.advised
关于人工流产并发症,错误的是
A.术者操作技术不熟练可致子宫穿孔
B.子宫穿孔易发生于哺乳期子宫
C.术中出血应停止手术操作
D.吸宫不全及术中出血最常见
E.感染发生时多为子宫内膜炎