题目内容

肺炎时易并发脓胸、脓气胸的常见病原体是（）

A. 肺炎球菌
B. 溶血性链球菌
C. 金黄色葡萄球菌
D. 铜绿假单胞菌
E. 白色念珠菌

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胎先露指（）

A. 胎儿长轴与母体长轴的关系
B. 胎儿在子宫内所取的姿势
C. 最先进入骨盆入口平面的胎儿部分
D. 胎儿指示点和骨盆的关系
E. 胎儿枕骨和骨盆的关系

成年男性血红蛋白正常参考值范围为（）

A. 100～1409/L
B. 140～1709/L
C. 110～1509/L
D. 170～2009/L
E. 120～1609/L

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.Spread spectrum simply means that data is sent in small pieces over a number of the (16) frequencies available for use at any time in the specified range. Devices using (17) spread spectrum(DSSS) communicate by (18) each byte of data into several parts and sending them concurrently on different (19) . DSSS uses a lot of the available (20) , about 22 megahertz(MHz). （19）是（）

A. bits
B. frequencies
C. packets
D. messages

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.Open Shortest Path First (OSPF) is a (36) routing algorithm that (37) work clone on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires (38) processing power. The (39) algorithm is used to calculate routes. OSPF routing table updates only take place when necessary, (40) at regular intervals. （38）是（）

A. more
B. less
C. same
D. most