从入学到现在，身边的这棵槐树已经增添了六个年轮。每一个年轮，都仿佛是一本色彩斑斓的画

图根导线的测角中误差为（）。

A．±15"

B．±18"

C．±20"

D．±22"

在实际运用中，在进行资本结构决策时一般使用( )。

A．个别资本成本

B．边际资本成本

C．间接资本成本

D．加权平均资本成本

拨动连杆应动作灵活，同一连杆颈的两连杆大端的侧面间隙不小于（）mm。

纳税人提供建筑业劳务(不含装饰劳务)的，其营业额应当包括工程所用原材料、设备及其他物资和动力价款在内，包括建设方提供的设备的价款。( )

An expert system is a software that (41) specialist knowledge-about a particular domain of (42) and is capable of making (43) decisions with in that domain. Although expert systems typically focus on a very narrow domain, they have achieved dramatic success with (44) problems, This has excited wide spread interest outside the research laboratories from which they emerged.
Expert systems have given rise to a set of "knowledge engineering" methods constituting a new approach to design of high performance software system. This new approach represents an (45) change with revolutionary consequences.

A．develops

B．directory

C．effect

D．encapsulates

E．evolutionary

F．experienced

G．expertise

H．intelligent

I．real-life

J．real-time