对于一个点物标,造成其雷达回波横向扩展的因素是()。
A.物标闪烁
B.水平波束宽度
C.CRT光点直径
D.A+B+C
参考答案:D
习 * * 3月23日视察国防大学并接见国防大学第六次党代表大会全体代表和师以上领导干部,代表党中央和中央军委向会议召开表示热烈祝贺。他强调,实现强军目标,建设世界一流军队,我军院校建设必须有一个大的加强。要紧紧围绕实现党在新形势下的强军目标,贯彻新形势下军事战略方针,解放思想、实事求是、与时俱进,积极推进院校改革创新,不断提高办学育人水平,为实现中国梦强军梦提供有力的()和()支持。
There is virtually no limit to how one can serve community interests, from spending a few hours a week with some charitable organization to practically full-time work for a social agency. Just as there are opportunities for voluntary service (1) (VSO) for young people before they take up full-time employment, (2) there are opportunities for overseas service for (3) technicians in developing countries. Some people, (4) those who retire early, (5) their technical and business skills in countries (6) there is a special need.
So in considering voluntary or (7) community service, there are more opportunities than there (8) were when one first began work. Most voluntary organizations have only a small full-time
(9) and depend very much on volunteers and part-timers. This means that working relationships are different from those in commercial organizations, and values may be different. (10) some ways they may seem more casual and less efficient, but one should not (11) them by commercial criteria. The people who work with them do so for different reasons and with different (12) , both personal and (13) . One should not join them (14) to arm them with professional experience; they must be joined with commitment to the (15) , not business efficiency. Because salaries are (16) or non-existent many voluntary bodies offer modest expense. But many retired people take part in community service for (17) , simply because they enjoy the work.
Many community activities possible (18) retirement were also possible during one’s working life but they are to be undertaken (19) seriously for that. Retired people who are just looking for something different or unusual to do should not consider (20) community service.
11()
A.look at
B.comment
C.enjoy
D.judge