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问题 单项选择题

关于先天性髋关节脱位的检查，下列哪项3个月以上的婴幼儿不宜采用

A．B超
B．Allis征
C．Ortolanl及Barlow试验
D．髋关节屈曲外展试验
E．X线检查

答案

参考答案：C

配伍题 B1型题

经产妇，27岁，32周妊娠，昨日夜晚突然出现无痛性 * * 流血，最可能的诊断是（）
27岁初孕妇，妊娠38周，患重度妊娠高血压综合征，昨晚突然出现 * * 流血伴下腹痛，最可能的诊断应是（）

A.前置胎盘

B.羊水过多

C.胎盘早剥

D.先兆子宫破裂

E.子宫破裂
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单项选择题

A Bluetooth device can be either a master or a slave and any of the devices within a ___30___can be the master. There is only one master and there can be up to ___31___ active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to ___32___.parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to ___33___ mode before it can become active. Within a network, all ___34___ communications are prohibited.

32（）

A.127 

B.255 

C.511 

D.1023
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