皮皮学，免费搜题
登录
搜题
【单选题】
在一个“订单输入子系统”中，创建新订单和更新订单都需要检查用户帐号是否正确。那么，用例“创建新订单”、“更新订单”与用例“检查用户帐号”之间是（ ）关系A.
包含（include）
B.
扩展（extend）
C.
分类（classification）
D.
聚集（aggregation）
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【多选题】What are the essentials of a good report ?
A.
fairness
B.
accuracy
C.
completeness
D.
concisenessand logical presentation
【单选题】The main idea of paragraph 2 is______.
A.
colors may have effect on our work and study
B.
colors do have effect on our moods (情绪)
C.
light and bright colors make people happy
D.
factory workers can work better in a bright room
【简答题】Have you wondered why different animals or pests have their particular colors? Colors in them seem to be used mainly to protect themselves. Birds, especially seagulls are very fond of locusts, but bir...
【单选题】What is the main idea of the passage?
A.
Light colors make people feel more cheerful.
B.
Colors can influence people's moods.
C.
Dark colors make people feel sad.
【简答题】根据短文内容，判断正(T)误(F)。 In general, people talk about two groups of colors: warm colors and cool colors. Scientists think that there are also two groups of people: people who prefer warm colors and people ...
【简答题】（）是屋盖结构的主要承重构件，直接承受屋面荷载，有的还要承受悬挂式梁式起重机、天窗架、管道或生产设备等荷载，对厂房的安全、刚度、耐久性、经济性等起着至关重要的作用。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
