英语语法填空题,PLM ____________ (have) its roots in the design and

英语语法填空题,
PLM ____________ (have) its roots in the design and engineering function.The 1970s________ (see) the introduction of systems to help manage the vast amount of CAD data that_________ (create) to define products.Developments _______(focus) on file management and version control,shown by the interchangeable use of terms such as engineering data management _______(EDM) and product data management _______(PDM) for these systems.Wider acceptance of PDM tools ______(hold) back in the 1980s by the reluctance of many engineers to get to grips with unfriendly tools.Many PLM industry leaders _____ (say) that PLM_________ (grow) out of the Computer Integrated Manufacture movement of the 1980s.At that time,computers_______ (begin) to permeate the functional silos of manufacturing organizations,and forward-thinkers ___________(find) a way to facilitate information flow throughout an enterprise and beyond.By the early 1990s,PDM ___________ (have) a strong foothold within the engineering function but other parts of the business now _________ (wake) up to the benefits of having access to the product data management solutions that _________ (be) available.This broader community again_________ (demand) improvements,such as better user interfaces,support for different platforms and the introduction of visualization software.By the late 1990s and into the current decade,PDM__________ (link) with multiple ERP systems.Vendors _________ (pay) more attention to collaboration with partners and to e-business.More recently,vendors __________ (move) from selling packaged,stand-alone applications to offering systems integration services to pull together a number of complementary solutions.PDM________ (become) PLM,providing decision support at an enterprise level as well as continuing to handle traditional PDM functions.PLM vendors now _________ (consider) whether,with many different kinds of users and with greater cross-company collaboration,everyone should _______ (have) the same PDM system and how they can ________ (exploit) the power of the Internet and the browser web interface.
所用时态：Tenses:Present,Present Perfect,Past,Past Perfect - Active and Passive Voice

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