A.意识
B.B.能力
C.C.措施
D.D.技术
关系数据库用()来表示实体之间的联系。关系的完整性约束有三方面的内容,其中,由数据库管理系统自动完成的是()。
关系数据库用()来表示实体之间的联系。 Many theories concerning the causes of
juvenile delinquency (crimes committed by young people) focus either on the
individual or on society as the major contributing influence. Theories
(21) on the individual suggest that children engage in criminal
behavior (22) they were not sufficiently penalized for
previous misdeeds or that they have learned criminal behavior through
(23) with others. Theories focusing on the role of society
suggest that children commit crimes in (24) to their failure
to rise above their socioeconomic status, (25) as a rejection
of middle-class values. Most theories of juvenile delinquency have focused on
children from disadvantaged families, (26) the fact that
children from wealthy homes also commit crimes. The latter may commit crimes
(27) lack of adequate pa- rental control. A. immune B. resistant C. sensitive D. subject [单选题]下列关于脚手架工程的规定正确的是( )。
A.常规的脚手架工程,可以不编制专项施工方案,做好验收即可 B.对脚手架工程所使用的钢管、扣件应检查验收其质量,脚手板、安全网可以不必验收 C.脚手架工程必须编制专项施工方案,并严格按照经审批的方案搭设 D.从事特种作业的架子工因持有特种作业操作证,不必进行入场安全教育 [单选题]螺口灯头的螺纹应与()相接。
A.零线 B.相线 C.地线 [单选题]重复接地指PE线或PEN线上除工作接地外的其他点再次接地。关于重 复接地作用的说法,正确的是
A.减小零线断开的故障率 B.加速线路保护装置的动作 C.提高漏电设备的对地电压 D.不影响架空线路的防雷性能 [单选题]请示报告应当( ),一般不得越级请示报告。特殊情况下,可以按照有关规定直接向更高层级党组织请示报告。
A.逐级进行 B.依申请进行 C.依规进行 D.随意进行 [单选题]下列各项中,不属于建筑物的是( )。
A.厂房 B.住宅 C.体育馆 D.隧道 [判断题]系统各级根据具体条件可采用CE设备或其他传输通道接入综合信息网广域网,但不可使用就近原则。
A.正确 B.错误 我来回答: 提交
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