下列关于可摘局部义齿基托的叙述，你认为哪项是错误的()A．在保证义齿固位与稳定的前提

架空敷设是将供热管道设在地面上的独立支架或带绷梁的桁架及建筑物的墙壁上。以下属于其特点的是（）。

A.受地下水位的影响

B.运行时维修检查不方便

C.占地面积较小

D.管道热损失大

皮肤移植的分类有哪些（）.

A、根据移植皮肤来源分类

B、根据移植皮肤有无血供分类

C、根据移植皮肤所含组织成分分类

D、根据移植皮肤的方法分类

E、根据皮肤移植部位分类

Across a wide variety of fields, data are being collected and accumulated at a dramatic pace. 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．dense

B．compact

C．extensile

D．short

一瓶浓度为80%的酒精溶液倒出

，再倒出

后仍用水加满，再倒出

后还用水加满，这时瓶中酒精溶液浓度为（）。

A．30%

B．35%

C．32%

D．50%

在Visual Basic 的立即窗口内输人以下语句
　　X=97
　　 Chr＄ (X)
　　在窗门中显示的结果是　【6】　 。