证券发行的最后环节是将证券推销给投资者。发行人推销证券的方式不包括( )。
A．直销
B．自销
C．包销
D．代销
参考答案：A
患者，女性，55岁。腹股沟韧带内侧下方突然出现半球形包块，疼痛，不能回纳，伴有恶心、呕吐，肛门不排气。腹部X线检查提示：腹腔胀气，有数个液平。
最有助于病情判断的是（）
A.该患者为年龄大于40岁的女性
B.疼痛，伴有恶心、呕吐
C.包块呈半球形
D.脏器经股环、股管，经卵圆窝突出
E.腹部X线检查提示腹腔胀气
Open Shortest Path First(OSPF)is a (71) routing algorithm that (72) work done on theOSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing,requires (73) processing power. The (74) algorithm is used to calculate mutes. OSPFrouting table updates only take place when necessary, (75) at regular intervals.
A．distance-vector
B．link-state
C．flow-based
D．selective flooding
