通常的PLC特殊扩展功能模块有哪些类型()。
A、开关量扩展输出Thoughshe_____andpleaded,herefusedtogotothedance.
Youmustberesponsibleforallthelosses____fromyourdelayinopeningthecoveringL/C.
Mrs.Joneshada_____husband,whowoulddoanythingforher.
Aftersomeverytriflingstupid______,sheventuredtoaskwhetheritwastruethathewasgoingaway.
自19世纪以来,资本主义新闻事业经历的主要发展阶段是()。