一个长方形运动场,长60米,比宽长20米,这个运动场的周长是[ ]
A.80米
B.160米
C.200米
D.280米
答案:C
关于麻醉用药对体温的影响,哪项不对()。
A.全麻药主要通过抑制体温调节中枢而影响体温
B.肌松药使肌肉丧失作为产热器官的功能而易于使体温下降
C.拟肾上腺药可增加全身代谢而使体温升高
D.抗胆碱药使汗腺分泌减少而使体温升高
E.局麻药中毒时的抽搐可使体温增高
A project management technique that is currently in widespread use is the (66) . 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 (67) , which are events that signify the accomplishment or completion of major deliverables during the project. Most system development methodologies also provide (68) , 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. (69) was developed to make clear the interdependence between project tasks before those tasks are scheduled. (70) offers the advantage of clearly showing overlapping tasks.
A. CPM B. Network Diagram C. PERT D. Gantt chart