搜题请搜索小程序“爱下问搜题”
问题 问答题

钢筋混凝土结构对钢筋的性能有哪些要求

答案

参考答案：(1) 强度高，包括屈服强度和抗拉强度两个指标；(2) 塑性好，包括伸长率和冷弯性能两个指标；(3) 可焊性好；(4) 与混凝土有良好的黏结。

选择题

Amy’s parents have to work this Sunday, so she is ______ her little brother. [ ]

A. keeping      

B. finishing

C. babysitting    

D. leaving
查看答案
单项选择题

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
查看答案