(71) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the (72) for designing and constructing an improved system. (73) is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called (74) . (75) is another such technique that integrates data and process concerns into constructs called objects.

A．image
B．picture
C．layout
D．blueprint

长期服用异烟肼可引起（）

A.中枢兴奋，诱发癫痫和惊厥

B.末梢神经炎

C.肝损害

D.耳鸣或耳聋

E.球后视神经炎