We know a computer is a machine that processes data (stored in main memory) into information, under control of a stored program. We also know that, internally, a computer is a binary machine; thus the data and the program instruictions must be stored in binary form. Characters are represented in (71) . Numbers are stored as binary numbers, with each bit’s positional value significant. A computer’s main memory is divided into bytes, words or both (depending on the system), and each of these basic storage units is assigned an (72) . Using this address, the processor can read or write selected bytes or words.
The processor consists of a clock, an instruction control unit, an arithmetic and logic unit, and registers. Once a program is stored in main memory, the processor can begin to execute it. During (73) , the instruction control unit fetches an instruction from main memory; during (74) , the arithmetic and logic unit executes it.
A. E-time
B. I-time
C. cycle time
D. run time
| Since there is such an abundance of
food in the sea, it is understandable that some of the efficient, highly
adaptable, warm-blooded mammals that {{U}} (67) {{/U}} on land should
have returned to the sea. Those that {{U}} (68) {{/U}} have flourished.
Within about 50 million years--{{U}} (69) {{/U}} time at all,
geologically speaking--one of the four kinds of mammals that has {{U}} (70)
{{/U}} to a marine environment has developed into the largest of all animal
{{U}} (71) {{/U}}, the whale. A second kind, the seal, has produced what
is probably the greatest population of large carnivorous mammals on
Earth. This suggests that these "top dogs" of the ocean are {{U}} (72) {{/U}} and multiplying. {{U}} (73) {{/U}}, such has not been the case, at ieast not for the last 150 years. Trouble has closed in {{U}} (74) {{/U}} these mammals in t A. specialties B. species C. kinds D. animals [单选题]业主项目管理机构应组织各参建单位结合实际情况编制应急预案，落实应急组织、程序、资源及措施，监督参建单位开展应急培训和应急演练，检查落实应急队伍和应急物资装备。
A.高挂高用 B.高挂低用 C.低挂高用 D.低挂低用 [单选题]下列不属于法律服务队伍的是(）。
A.法官 B.律师 C.公证员 D.法律服务志愿者 [单选题]“嫦娥”三号登月探测器于2013年12月2日在()卫星发射中心发射。
A. 文昌 B. 西昌 C. 酒泉 [判断题]劳动既是公民的基本权利，也是公民的义务。( )
[判断题]《特种设备作业人员监督管理办法》将锅炉、压力容器(含气瓶)、压力管道、电梯、起重机械、客运索道、大型游乐设施、场(厂)内机动车辆等特种设备作业人员及其相关管理人员统称特种设备作业人员。
A.正确 B.错误 [多选题]工作人员不准在SF6设备防爆膜附近停留。若在巡视中发现异常情况，应（ ）。
A.A.立即报告 B.B.查明原因 C.C.立即停电处理 D.D.采取有效措施进行处理 [单选题]轿顶防护栏的作用是（ ）。A.装饰作用；B.平衡轿厢、对中重量；C.保护维修人员安全；D.悬挂标志牌
A.A B.B C.C D.D [判断题]控制电缆拆除时，电缆芯可以单端拆除。
A.正确 B.错误 [单选题]地基基础回填土下陷的检修决策是( )。
A.夯实或采取其它地基加固措施 B.重新嵌填 C.加固处理 D.局部修理或重做 [单选题]在一定时期内，劳动力供给具有相对稳定性，就业主要取决于劳动力需求。下列因素中，与人力资源需求无关的是（ ）。
A.就业弹性 B.人口结构 C.就业结构 D.技术进步 [单项选择]下列哪项可辅助诊断子宫性闭经
A. 雌激素试验阴性 B. 雌激素试验阳性 C. 孕激素试验阴性 D. 孕激素试验阳性 E. 垂体兴奋试验阴性 我来回答: 提交
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