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问题 单项选择题

“Dandy-Walker综合征“，下列发育异常哪项不对()

A．中脑导水管先天性闭锁

B．横窦、小脑幕上移

C．第四脑室、枕大池先天性囊样扩张

D．小脑蚓部发育不良

E．脑积水

答案

参考答案：A

单项选择题 B型题

上述哪种疾病可出现发作性四肢无力（）

A.格林--巴利病

B.周期性瘫痪

C.多发性神经元脱髓鞘

D.脑肿瘤

E.重症肌无力危象
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单项选择题

OOP languages that create objects, such as (1) and (2) are beginning to take hold as viable tools for programmers. To effectively reuse objects, programmers need a place to store them such as an ODBMS or a RDBMS with object oriented extensions.

Databases that handle object data not only let user store and retrieve (3) data, but also let them store objects created by OOP languages, to facilitate rapid software development and reuse, and let them (4) new multimedia applications combining multiple data types.

RDBMS vendors have developed new extensions to existing DB technology to accommodate the most common forms of (5) data.

（1）是（）

A.C++

B.BASIC

C.PASCAL

D.C
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