单选题
A project management technique that is currently in
widespread use is the{{U}} {{U}} 61 {{/U}} {{/U}}. The purpose
of this technique is to detail, in hierarchical fashion, all of the activities
that are required to meet project objectives. There are some special activities
called{{U}} {{U}} 62 {{/U}} {{/U}}, which are events that
signify the accomplishment or completion of major deliverables during the
project. Most system development methodologies also provide{{U}} {{U}}
63 {{/U}} {{/U}}, whose purpose is to contain the various pieces of
relevant information - feasibility assessments, schedules, needs analysis, and
so forth - in a single place so that they can be presented to project clients
and other related parties. Several types of important network diagrams are used
in project management.{{U}} {{U}} 64 {{/U}} {{/U}}was developed
to make clear the interdependence between project tasks before those tasks are
scheduled.{{U}} {{U}} 65 {{/U}} {{/U}}offers the advantage of
clearly showing overlapping tasks.