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问题 单项选择题

工程变更价款时，FIDIC合同条件下工程变更的估价由（）商定或确定合同价格。

A．承包人按照相应条款

B．发包人按照相应条款

C．工程师按照相应条款

D．承包人提出，发包人审定后

答案

参考答案：C

单项选择题

下述关于数据库系统的叙述中正确的是（）。

A．数据库系统减少了数据冗余

B．数据库系统避免了一切冗余

C．数据库系统中数据的一致性是指数据类型一致

D．数据库系统比文件系统能管理更多的数据
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完形填空

第二节：语法填空（共10小题；每小题1.5分, 满分15分）

If you walked past the supermarket, you would find many foods that have been treated ____16______ (kill) any harmful germs that might have been in them. Milk is a good example. Raw milk --- that is, milk just as it comes from the cow --- may be _____17_____    (safe) to drink. But ____18______ the milk is heated and then cooled, the harmful germs are killed. The man ____19______discovered this way of treating milk was a Frenchman by the name of Louis Pasteur.

In the supermarket you would also find many frozen foods --- frozen fruits, vegetables, meat and fish. As techniques for ____20______ (freeze) food are being improved, more frozen foods are appearing on the market, and more people are buying them. Fruits and vegetables to be sold in the supermarket are often frozen the moment ____21______are picked. The       ____22_____(soon) fruits and vegetables are frozen, the better. _______23_____, machines are often taken into the fields where____24______food grows, so that little time is lost _____25_____picking and freezing.
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