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发热过程可分为哪三个阶段？各有何特点？

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患者男，25岁，车祸致右下肢活动障碍1天入院，诊断右胫骨骨折。既往体健，术前检查正常。拟在硬膜外麻醉下行切复内固定术。穿刺点选择L_3~4，穿刺置管成功后注入2％利多卡因5ml，患者述耳鸣、视物模糊、口舌发麻。肿瘤切除后出现呼吸困难应考虑（）

A. 神经损伤
B. 胸膜损伤引起的气胸
C. 麻醉平面过高
D. 血压下降
E. 辅助药物的作用

Examine the following configuration on Router R1. R1's show ip route 172.16.4.1 command list s a route with outgoing interface S0/1/1. Host 172.16.3.3 uses telnet to connect to host 172.16.4.1.What will Router R1 do with the packets generated by host 172.16.3.3 because of the telnet,assuming the packets enter R1's F0/0 interface?（） interface Fastethernet 0/0 ip address 172.16.1.1 255.255.255.0 ip policy route - map Q2 ! route - map Q2 permit match ip address 101 set interface s0/0/1 ! access - list 101 permit tcp host 172.16.3.3 172.16.4.0 0.0.0.255

A. The packet will be forwarded out S0/0 /1, or not at all.
B. The packet will be forwarded out S0/0/1 if it is up.
C. The packet will be forwarded out S0/1/1 if it is up.
D. The packet will be forwarded out S0/1/1 if it is up, or if it is not up, out s0/0/1.
E. The packet will be forwarded o ut S0/0/1 if it is up, or if it is not up, out s0/1/1.

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加热炉均热段的目的是使（）。

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汽轮机跟随锅炉的控制方式有何优缺点？

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