在WAP中，一个WML文档称为一个deck，一个 deck内包含若干个card， card是用户浏览和交互的单

A.WML

B.HTTP

C.HTML

D.Java

A.WML

B.WDP

C.WCD

D.WTLS

A.Unit

B.Pwnch

C.Piece

D.Card

A.Unit

B.Pwnch

C.Piece

D.Card

WAP uses (71) , which includes the Handheld Device Markup Language (HDML) developed by Phone.com. WML can also trace its roots to eXtensible Markup Language (XML). A markup language is a way of adding information to your (72) that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language. (73) HTML, WML is considered a meta. language. Basically, this means that in addition to providing predefined (74) , WML lets you design your own markup language (75) . WAP also allows the use of standard Internet protocols such as UDP, IP and XML.

A．HTML

B．XML

C．DML

D．WML

WAP uses(66)which includes the Handheld Device Markup Language(HDML)developed by Phone.com. WML can also trace its roots to eXtensible Markup Language(XML). A markup language is a way of adding information to your(67)that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language.(68)HTML, WML is considered a meta. language. Basically, this means that in addition to providing predefined(69), WML lets you design your own markup language(70). WAP also allows the use of standard Internet protocols such as UDP, IP and XML.

A．HTML

B．XML

C．DML

D．WML

IS-LM模型中一个收入对应一个均衡利率。()

（6 ）如果表中一个字段不是本表的主关键字，而是另外一个表的主关键字或候选关键字，这个字段称为

【 6 】

下面关于继承的叙述正确的是 ()

A．在Java中类间只允许单一继承

B．在Java中一个类只能实现一个接口

C．在Java中一个类不能同时继承一个类和实现一个接口

D．在Java中一个类可以同时继承多个类