______________ are information systems that allow companies to integrate information and support perations on a company-wide basis.
A. Customer relationship management systems
B. Enterprise systems
C. Wide area networks
D. Interorganizational systems
查看答案
All of the following are true about legacy systems except ______________.
A. they are standalone systems
B. they are older software systems
C. they are ERP systems
D. they may be difficult to integrate into other systems
常用的材料力学性能包含
A. 密度
B. 强度
C. 硬度
D. 韧性
工程材料包含哪些类型
A. 金属材料
B. 陶瓷材料
C. 高分子材料
D. 符合材料
人类开发利用的第一种金属材料是
A. 金
B. 铜
C. 铁
D. 钢
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