S7-200系列PLC中,上升沿脉冲生成指令是()
A.ED
B.EU
C.LPP
D.LDP
参考答案:B
—Why don't we choose that road to save time?
—The bridge to it ________.
A.has repaired
B.is repaired
C.is being repaired
D.will be repaired
患者,男性,67岁,上颌戴可摘局部义齿多年,3天前上颌硬腭及牙龈区有成簇小水疱出现,疱破后形成溃疡,涂片检查可见病毒包涵体,拟诊断为()
A.多型渗出性红斑
B.原发性疱疹性口炎
C.带状疱疹
D.疱疹性口炎
E.义齿性口炎