皮皮学，免费搜题
登录
搜题
【简答题】
在选择 PLC 时主要考虑以下几个因素。功能范围:根据系统控制要求选择所需 PLC 模块的( )和数量,使 PLC 功能与控制任务相适应。 I / O 点数:选择 I/O 总点数除了要满足当前控制系统的要求以外,还应考虑到将来的发展,一般会在估算的 I/O 总点数上再加上( ) 左右 的余量。存储器容量:用户存储器容量的估算与许多因素有关,如( ) 点数 、运算处理量、控制要求、程序结构等。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】In an evaluation of an 8-year-old who has recurrent infections since the first year of life, findings include enlargement of the liver and spleen, lymph nod inflammation, and a superficial dematitis r...
A.
Defect in the enzyme NADPH oxidase
B.
Defect in the enzyme adenosine deaminase （ ADA ）
C.
Defect in the IL-2 receptor
D.
Developmental defect at the pre-B stage
E.
Developmental failure of pharyngeal pouches 3 to 4
【简答题】Mid-IB at a glance The summer vacation is the time to consolidate（巩固）your learning and prepare for the year ahead. In July and August Oxford Study Courses will once again hold its Mid-IB Summer School...
【简答题】European women were in great demand in New Zealand in those early times. That is, women prepared to marry the many single men who arrived at the colony among the first whalers and settlers and now had...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
