证券的回转交易是指投资者买入的证券，经确认成交后，在交收前全部或部分卖出。（)A．正确B．错误

A．edited

B．updated

C．exchanged

D．revised

ce. There is an urgent need for a new generation of computational theories and tools to assist humans in(96)useful information(knowledge) from the rapidly growing(97)of digital data. These theories and tools are the subject of the emerging field of knowledge discovery in database(KDD). At an abstract level, the KDD field is concerned with the development of methods and techniques for making(98)of data. The basic problem addressed by the KDD process is one of mapping low-level data(which are typically too voluminous to understand and digest easily) into other forms that might be more(99)(for example, a short report), more(100)(for example, a descriptive approximation or model of the process that generated the data), or more useful(for example, a predictive model for estimating the value of future cases). At the core of the process is the application of specific data-mining methods for pattern discovery and extraction.

A．expiring

B．examining

C．extracting

D．extricating

many similar modeling languages with minor differences in overall(112)power. Most of the modeling languages shared a set of commonly accepted concepts that are expressed slightly differently in various languages. This lack of(113)discouraged new users from entering the OO market and from doing OO modeling, without greatly expanding the power of modeling. Users longed for the industry to adopt one, or a very few, broadly supported modeling languages suitable for(114)usage.Some vendors were discouraged from entering the OO modeling area because of the need to support many similar, but slightly different, modeling languages. In particular, the supply of add-on tools has been depressed because small vendors cannot afford to support many different formats from many different(115) modeling tools. It is important to the entire O0 industry to encourage broadly based tools and vendors, as well as niche products that cater to the needs of specialized groups.

A．programming

B．modeling

C．formal

D．intelligent

A．agreement

B．understanding

C．characteristic

D．diversity

A．declined

B．proliferated

C．destroyed

D．produced

A．text

B．graphic

C．document

D．database

A．operation

B．completeness

C．integrity

D．interchange

为了使构件系统更切合实际、更有效地被复用，构件应当具备(15)，以提高其通用性。

A．可继承性

B．可变性

C．可封装性

D．可伸缩性

以下对小型机的理解，正确的是(32)。

A．小型机相对于大型机而言，管理较简单，一般采用RISC CPU

B．小型机相对于大型机而言，成本较低，一般采用CISC CPU

C．小型机相对于微机而言，管理较复杂，一般采用CISC CPU

D．小型机相对于微机而言，各项性能优良，一般采用RISC CPU

o project activities.

A．project management plan

B．contract

C．project human resource plan

D．project charter