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问题 单项选择题

在牙痛时应用冷疗，目的是（）

A、防止冻伤。

B、防止引起反射性心率减慢。

C、防止腹泻。

D、防止引起反射性末梢血管收缩而影响散热，或引起一过性冠状动脉收缩。

E、防止局部毛细血管收缩，血液循环不良

答案

参考答案：E

单项选择题

长江主要三港包括（）

①武汉

②长沙

③重庆

④南京

A.①②③

B.①③④

C.②③④

D.②③④
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单项选择题

Object-oriented DBMS integrated a variety of (81) data types-such as business procedures, graphics, pictures, voice and annotated text.
Object orientation also makes a (82) to application development efficiency. It makes the data, functions, attributes, and relationships an integral part of the (83) . In this way, objects can be reused and replicated.
Some leading RDBMS vendors support the concept of integrating object management capabilities with their current line of relational products. That capability enable users to the development cycle, since integrity logic and business roles no longer need to be programmed (84) each application.

A．tool

B．in

C．idea

D．contribution

E．joke

F．short

G．object

H．theoretical

I．extent

J．shorten K. real-world L. into
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