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【简答题】
在饮料自动销售系统中,顾客选择想要的饮料。系统提示需要投入的金额,顾客从机器的前端钱币口投入钱币,钱币到达钱币记录仪,记录仪更新自己的选择。正常时记录仪通知分配器分发饮料到机器前端。但可能饮料已售完,也可能用完了找给顾客的零钱而无法销售饮料。先写出“买到饮料”的场景、“饮料已售完”的场景以及“机器没有合适的零钱”的场景,然后根据场景用 UML 分别表示出“买到饮料”“饮料已售完 " 以及“无法找零”的顺序图。
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举一反三
【单选题】The human being longs for a sense of being accomplished, of being able to do things, with his hand, with his mind, with his will. Each of us wants to feel he or she has the ability to do【1】that is mea...
A.
one thing
B.
something
C.
work
D.
a job
【单选题】底线思维能力是一种追求精准、强化预判性以及( )的能力。
A.
提高风险
B.
追求最好结果
C.
提高积极性
D.
降低可能性
【单选题】底线思维能力是一种、追求精准、强化预判性以及()的能力。
A.
提高风险
B.
降低错误
C.
提高积极性
D.
降低可能性
【判断题】在文类学研究中,不能完全用某一民族的文类概念和理论来衡量和要求其他民族的相应文学类型。
A.
正确
B.
错误
【单选题】They failed to pass the exam last time. I regretted ______them. A. to be not able to help B. being not able to help C. not being able to help D. not be ...
A.
to be not able to help
B.
being not able to help
C.
not being able to help
D.
not be able to help
【简答题】A.Being initiative. B.Being able to lead a team. C.Being dynamic. D.Being able to prettily use power.
【单选题】She apologized for _____ the party.
A.
not her being able to attend
B.
her not being able to attend
C.
her being able not to attend
D.
her being notable to attend
【单选题】境内旅游,旅行社在出发前2日通知旅游者,应向旅游者全额退还预付旅游费用,并支付旅游者费用总额()的违约金。
A.
10%
B.
15%
C.
20%
D.
25%
【单选题】She apologized for ______.
A.
her not being able to attend the meeting
B.
her being not able to attend evening party
C.
her being able not to attend the class
D.
not her being able to attend the lecture
【单选题】境内旅游,因旅行社原因未成行,在出发前2日通知旅游者,应向旅游者全额退还预付旅游费用,并支付旅游费用总额( )的违约金。
A.
10%
B.
15%
C.
20%
D.
25%
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