文件系统与数据库之间的主要区别是看 【13】 。

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问题:

文件系统与数据库之间的主要区别是看 【13】

考点:计算机等级考试数据库技术三级数据库技术笔试61
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移栽白菜幼苗时,尽可能选在阴天或傍晚进行,并去掉一部分叶子,这样做是为了

A.降低光合作用

B.降低蒸腾作用

C.减少水分吸收

D.增加水分吸收

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十二指肠溃疡的发病主要是因为

A.胃酸、胃蛋白酶等侵袭因素增强

B.黏膜屏障减弱

C.细胞更新能力减弱

D.黏膜血流量减低

E.表皮生长因子减少

题型:填空题
根据句意从方框中选用合适的词组,并用其适当形式填空。
be made from, pull down; hear of; pick up; look out
1. Sorry, I have never __________ such a surprising story before.
2. These houses are very old. We should _________ them _____________  to build new ones.
3. I found a wallet lying on the ground. I quickly ________ it ___________ and handed it to the teacher.
4. The walls ___________ old glass bottles that are glued together.
5. ____________! It's dangerous for you little kids to run about on the busy street.
题型:填空题

14373()

A.A

B.B

C.C

D.D

题型:填空题

市政公用工程常常处于城镇区域,必须在施工组织设计中贯彻()管理。

A.文明施工

B.安全施工

C.绿色施工

D.环境保护

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