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问题 单项选择题

汽车用交流发电机的优点：体积小，重量轻：结构简单，故障少，维修方便，使用寿命长：（）运转时，充电性能好：配用的调节器结构简单：产生干扰电波小。

A、发电机低速

B、发电机高速

C、发动机低速

D、发动机高速

答案

参考答案：C

单项选择题 A1型题

中药毒性最早表达的含义是（）

A.服药后的过敏反应

B.超大剂量出现的不良反应

C.中药的偏性

D.与治疗目的无关的不适反应

E.不合理配伍的副反应
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单项选择题

Even though current technologies make the ultimate segmented network impractical, new technologies and products hold the promise of making the concept a reality. Most important of all these new technologies are (71) . The ultimate switched LAN, which is technically possible, now, exhibits the following characteristics:
1. High-speed yet cost-effective switching devices can be implemented on a wide scale, providing dedicated connections for individual users and supporting the aggregate (72) of all networked users.
2. The ability to deploy switching capabilities incrementally into the (73) base. Switching implementations support switching of individual users or groups so that existing users of shared media modules can continue to use the existing equipment until they can justify moving to dedicate switched LAN connections.
3. Support and enhancement of existing routed environments. Switching (74) routint, but rather can be introduced into the network without making any changes to the existing routing equipment or configuration. (75) play a critical role in the integration of switching into existing networks.

A. device B. distributedC. installed D. integrated
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