在信号报警连锁系统中,为了减少联锁电路出现误动作的机会,提高联锁动作的可靠性,可以采 发布时间:2017-07-03 11:32 │ 来源:www.tikuol.com 题型:判断题 问题: 在信号报警连锁系统中,为了减少联锁电路出现误动作的机会,提高联锁动作的可靠性,可以采用三选二表决电路。
题型:判断题 Some people are sitting on the grass; others are walking along the lake, ______ .A.chatting and to laughB.to chat and to laughC.chatting and laughingD.chatted and laughed 查看答案