肩关节脱位的特殊体征是(),肘关节后脱位的特殊体征是()。
A. 方肩畸形
B. 前臂变长
C. 肩肘部明显肿胀
D. 肘后三角不等腰
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《煤矿安全规程》规定进风井口以下空气温度应保持()℃以上。
A. 0
B. 1
C. 2
D. 4
分包商人员的体检证明须由乡镇级及以上医疗机构出具。
A. 正确
B. 错误
计算机中的声音文件有()、MIDI文件和压缩文件三种类型。
While troubleshooting an EIGRP routing problem you notice that one of the routers have generated a large number of SIA messages. What are two possible causes for EIGRP Stuck - In -Active routes?()
A. Some quer y or reply packets are lost between the routers.
B. The neighboring router starts receiving route updates from this router.
C. A failure causes traffic on a link between two neighboring routers to flow in only one direction(unidirectional link).
D. Th e neighboring router stops receiving ACK packets from this router.