JK触发电路中,当J=1、K=1、Qn=1时,触发器的状态为置1。
参考答案:错
. ____ by the thought that she was suffering a heart attack, she screamed for help.
A.Terrifying
B.Terrified
C.Being terrified
D.Having terrified
如某船在英吉利海峡发现一浮标,标身颜色为上黑下黄横纹,则危险物位于其()。
A.北侧
B.东侧
C.南侧
D.西侧