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问题 单项选择题 A1/A2型题

可引起明显休克体征，溃疡急性出血量一般需达到（）。

A.400ml

B.600ml

C.800ml

D.1000ml

E.1200ml

答案

参考答案：C

解析：急性失血达800ml可出现明显休克的体征。

单项选择题

Routing protocols use different techniques for assigning (71) to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal (72) Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (73) can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the (74) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (75)

A．user

B．distance

C．entity

D．cost
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单项选择题

女性患者，16岁，病史：面部疖肿挤压后出现发热、视物双影。查体：右侧球结膜水肿、眼球突出，右侧眼睑下垂、眼球运动固定、瞳孔扩大、对光反射消失，角膜反射消失，眼底可见视神经盘水肿。临床诊断考虑为（）

A.上矢状窦血栓形成

B.海绵窦血栓形成

C.大脑大静脉血栓形成

D.横窦和乙状窦血栓形成

E.直窦血栓形成
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