I don’t think it advisable that Tim _____ to the job since he has no experience.
A. is assigned
B. will be assigned
C. be assigned
D. has been assigned
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Smoking, which may be a pleasure for some people, is a serious source of discomfort for their fellows. Medical authorities express their1about the effect of smoking on the health not only2those who smoke but also of those who do not. In fact, nonsmokers who must involuntarily inhale the air polluted by the tobacco smoke may3more than the smokers themselves.As you are doubtless aware, a considerable number of our students have4an effort to5the university to ban smoking in the classrooms. I believe they are entirely right in their aim.6, I would hope that it is possible to achieve this by7on the smokers to use good judgment and show concern for others rather than8regulation.Smoking is prohibited by city laws in theaters and in halls used for showing films as well as in laboratories9there may be a fire hazard. Elsewhere, it is up to your good sense.I am therefore asking you to maintain “No Smoking” in the auditoriums and classrooms. This will prove that you have to keep nonsmokers’ health and well-being10, which is very important to a large number of our students.
数据词典是用来定义( )中的各个成分的具体含义。
A. 流程图
B. 功能结构图
C. 结构图
D. 数据流图
在数据词典中,以下哪一项表示允许重复0至任意次( )。
A. { }
B. 0{ }
C. 0{ }n
D. { }n
DFD的每个加工都必须有( )。
A. 一个输入和输出数据流
B. 一个输入数据流
C. 一个输出数据流
D. 一个输入或输出数据流