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【简答题】

We lived in a technological society where most goods are mass-produced by unskilled labor. Because of this, most people think that craft(手艺) no longer exists. One of the ways these people wrongly support their view is by pointing to 100-year-old homes which are still solid, and arguing that it is the craftsmanship that is responsible for their durability(持久性). “Homes in those days were well-built,” they say. No doubt these homes were well-built, but what these people have done is mix up the quality of material used in the house with the quality of the craftsmanship. Homes today could be built to last just as long as those old homes if people were willing or able to pay the price. For example, more people can no longer afford solid oak stairways, although they were once fairly common in older homes. Nor can they afford the high labor cost of employing a carpenter to build the stairway. Yet if someone can pay the high cost, there are still plenty of carpenters around able to make those stairways. And not only would these carpenters know how to build them, they would probably do a better job than carpenters of old. One thing the modern carpenter has which enables him to do a better job is much more advanced tools. Such tools as laser beams and power planes help them lay out a house better and make more precision cuts on the wood. Also, it is not uncommon any more to find carpenters with college degrees and carpenters with a solid knowledge of mathematics, which would enable them to deal with more difficult house designs. The problems of modern quality, then, really boils down to the problem of material, for the modern carpenter is just as able to produce craftsmanship as the carpenter of fifty years ago, but only if given proper material. 1. Compared to the carpenters in the past, modern carpenters are _______. A.more successful B.more learned C.more imaginative D.more hardworking 2. What does the underlined word “they” (paragraph 2) refer to? carpenters who are fond of oak stairways. carpenters who have college degrees. people who think highly of carpenters of old. people who think that modern material is of low quality. 3. What does the third paragraph mainly discuss? People in the past preferred to use oak to build stairways. It is now expensive to employ a carpenter. Modern houses last as long as the old one. Good carpenters still exist in modern times. 4. What would be the best title for the text? Is Craft Dead? Craft, Back to life? History of craftsmanship Carpenters Today and Yesterday

题目标签:持久性
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【单选题】事务的持久性是指( )。

A.
事务的所有操作在数据库中要么都做,要么都不做
B.
事务一旦提交,对数据库的改变是永久的
C.
一个事务内部的操作及使用的数据对并发的其他事务是隔离的
D.
事务的隔离执行(没有并发其他事务)保持数据库的一致性

【单选题】事务的持久性是指( )。

A.
事务所包含的操作要么都成功执行,要么都不执行
B.
事务一旦提交,它对数据库中数据的改变是永久性的
C.
一个事务内部的操作及使用的数据对并发的其他事务是隔离的
D.
事务必须使数据库从一个一致性状态变到另一个一致性状态

【单选题】事务的持久性是指()。

A.
事务中包括的所有操作要么都做,要么都不做
B.
事务一旦提交,对数据库的修改就是永远的
C.
一个事务内部的操作及使用的数据对并发执行的其他事务是隔离的
D.
事务必须是使数据库从一个一致性状态变到另一个一致性状态