在数据库管理系统的层次结构中,数据存取层处理的对象是单个______。它是将上层的集

题型:填空题

问题:

在数据库管理系统的层次结构中,数据存取层处理的对象是单个______。它是将上层的集合操作转化为单记录操作。

考点:计算机等级考试信息管理技术三级信息管理技术
题型:填空题
A strong wind was blowing hard, thunder could be heard, and lightning flashed    the dark sky. Rain was pouring down;it looked     heaven had been broken open.
Gleams of light(微弱的闪光) appeared from     of faraway houses, shining like jewels in all the dark.
A    woman dressed in rags(衣衫褴褛) and trembling with cold was    on a lonely road, while the merciless rain was    her without stop.
She knocked at a door, and a    answered it. She begged him to let her stay a while    . The boy    let her into the sitting room and leave her sitting by the fire.
The woman appeared old and tired under the bright electric light,      she was only in her early thirties. She sat       for a moment, and then her eyes began to look about the    . When her eyes rested on the picture of a young man, she    up, looking thunderstruck.
Just then, the boy came with his    . The man at once recognized the woman as his wife. They had     touch with each other during the war,      he thought he had lost her forever.
     words needed to be spoken. They ran into each other’s arms    the boy stared at them,puzzled.
The storm was over and the sky cleared. Feeling very    , the couple stood face to face with their child between them, watching the rain as it gradually    .
小题1:
A.intoB.belowC.acrossD.through
小题2:
A.only if B.as ifC.what ifD.even if
小题3:
A.doorsB.roofsC.wallsD.windows
小题4:
A.poorB.prettyC.uglyD.rich
小题5:
A.cryingB.wanderingC.strugglingD.wondering
小题6:
A.strikingB.beating C.hittingD.flowing
小题7:
A.boyB.girlC.manD.woman
小题8:
A.nearB.outC.outsideD.inside
小题9:
A.firstB.thenC.nowD.last
小题10:
A.becauseB.soC.thoughD.However
小题11:
A.stillB.thirstyC.hungryD.straight
小题12:
A.pictureB.fireC.roomD.house
小题13:
A.lookedB.cameC.pickedD.stood
小题14:
A.brotherB.fatherC.sisterD.mother
小题15:
A.madeB.gotC.keptD.lost
小题16:
A.whoB.whichC.butD.and
小题17:
A.SomeB.NotC.NoD.Many
小题18:
A.whileB.asC.whenD.since
小题19:
A.happyB.disappointedC.sorryD.calm
小题20:
A.beganB.stoppedC.endedD.finished
题型:填空题

超现实主义代表作品《记忆的永恒》它的作者是()

A.米罗

B.达利

C.苏丁

D.布朗库西

题型:填空题

制动装置在检修中因制造原因,产生裂损等影响使用的缺陷,需更换的零部件由车辆制动装置组装或检修单位有偿更换,向配件生产单位进行质量追溯。

题型:填空题

全冠修复中,活髓牙牙体预备后,用以下哪种粘固剂粘固临时冠最好()。

A.丁香油氧化锌糊剂

B.Ca(OH)2糊剂

C.磷酸锌水门汀

D.聚羧酸水门汀

E.玻璃离子水门汀

题型:填空题

中国加入WTO之后,根据加入世贸组织的相关政策规定中国航运市场必将更加开放,包括运输、物流服务等在内的服务贸易的大门也更加敞开。加入世贸组织之后,中国航运企业在获得更加广阔市场空间的同时也面临前所未有的竞争压力。如何在新一轮的激烈竞争中,及时调整我们的竞争策略,不断强化企业的竞争优势

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