数据库系统发生故障时,可以基于日志进行恢复。下面列出的条目中,_____是日志 记录

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问题:

数据库系统发生故障时,可以基于日志进行恢复。下面列出的条目中,_____是日志 记录的内容。Ⅰ. 事务开始信息Ⅱ. 更新信息Ⅲ. 提交信息Ⅳ. 事务中止信息

A.Ⅰ和Ⅱ

B.Ⅰ和Ⅱ和Ⅲ

C.Ⅱ和Ⅲ和Ⅳ

D.都是

考点:计算机等级考试数据库技术计算机三级(数据库技术)10
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8个月婴儿,单纯母乳喂养,面色苍白2个月。肝肋下1.0cm,脾肋下未触及。Hb80g/L,RBC3.5×1012/L,MCV68fl,红细胞大小不等,中心浅染区扩大,网织红细胞、血小板和白细胞数均正常。最可能的诊断是()

A.营养性缺铁性贫血

B.营养性巨幼细胞性贫血

C.营养性混合性贫血

D.再生障碍性贫血

E.遗传性球形红细胞增多症

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在图中,标出主光轴、焦点、焦距、光心

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某皮革加T厂鞣革车间出现多例患者,其临床表现为头痛、头昏,有明显的黏膜刺激症状,并出现咳嗽、胸闷、眼结膜水肿,体检时,肺部可闻干性啰音,X线胸片显示肺纹理增多、增粗。其最有可能接触的生产性毒物是()

A.H2S

B.硫化钠

C.鞣酸

D.二硫化碳

E.以上都不是

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Michel is a young girl who works for the police   36       a handwriting expert (专家). She has helped   37     many criminals (罪犯) by using her special talents (天才).

When she was fourteen, Michel was already       38    interested in the differences in her friends'   39      that she would spend hours    40     them. After   41    college she went to France for a   42    two-year class in handwriting at the School of Police Science.

Michel says that it is    43      for people to hide their handwriting. She can discover

44    of what she needs to know simply    45       looking at the writing with her own eyes,     46     she also has machines   47    help her make    48   different kinds of paper and ink. This knowledge is often    49      great help to the police.

Michel believes that handwriting is a good   50  of what kind of person the  51   is. "I wouldn't go out with a fellow    52   I didn't like his handwriting. " She says. But she      53  she fell in love with her future husband, a young policeman    54   she studied his handwriting. It is later proved to be  55   , however.

36. A. with                B.  by             C. like               D. as

37. A. search      B. follow           C. catch            D. judge

38. A. so          B. too               C. quite             D. extra

39. A. books      B. letter             C. tongues          D. handwriting

40. A. writing    B. studying         C. settling           D. uncovering

41 A. attending         B. finishing         C. starting             D. stepping into

42. A. powerful         B. natural           C. special            D. common

43. A .main      B. safe              C. easy              D. impossible

44 A. most         B. nothing          C. little              D. sight

45. A. with       B. by               C. of                D. about

46 A. so           B. for                C. thus              D. but

47 A. they         B. in which        C. that               D. those

48 A. up          B. out               C. for               D. Into

49 A. of           B. to                C. with             D. for

50 A. test          B. sign              C. means           D. habit(习惯)

51 A. thief         B. criminal          C. writer            D. policeman

52 A. whether     B. unless           C. if                 D. after

53 A. adds        B. tells              C. repeats           D. cries

54 A. before      B. after             C. shyly            D. and

55 A. necessary    B. all right          C. important               D. quite easy

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旋喷注浆结束后,等凝固24h,旋喷固结达初凝之后,方可继续钻进

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