题目内容

预热器的油箱中应注满（）或（），严禁使用（），以免发生爆炸。

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患者，男性，26岁，左眼巩膜外填压术联合环扎术后8天，出现左眼痛。查体：左眼眼压25mmHg，角膜上皮轻度水肿，Tyndall（++），KP（+），虹膜节段性萎缩，瞳孔散大，对光反应迟钝，睫状体区的巩膜变薄，透见其下葡萄膜，眼底红光可见，考虑正确的诊断为（）

A. 虹睫炎
B. 脉络膜脱离
C. 眼内感染
D. 眼前段缺血病变
E. 植入物排斥反应

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红细胞在低渗尿中易发生（）。

A. 可存在一定时间
B. 凝固
C. 膨胀
D. 溶解
E. 皱缩

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防止雷电反击的最有效方法之一是（）。

A. 降低杆塔高度
B. 降低导线悬挂高度
C. 降低接地电阻
D. 增大接地引下线截面

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Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）

A. Traffic forwarded from R2 to or through R1 will continue to be forwarded based on the forwarding table state at the time of the reload.
B. R2 will continue to forward traffic to R1， but R1 will drop the traffic because its neighbor adjacency with R2 has failed.
C. R2 will continue forwarding traffic to and through R1， but R1 will drop this traffic because it is not capable of maintaining its forwarding state.
D. All the traffic R2 is forwarding to or through R1 will be dropped while OSPF rebuilds its neighbor adjacency and forwarding tables.

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