采掘工作面探水前，必须编制探放水设计，确定探水警戒线。
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超声波在介质中的传播速度与（）有关
A. 介质的弹性
B. 介质的密度
C. 超声波波型
D. 以上全部
Companycom wants to manage multiple partitions for a p5 590 server using Partition Load Manager (PLM). Some of the partitions are dedicated processors and some of them are shared processors. What information about PLM limitations should be expressed to the customer?（）
All of the partitions can be managed in one group mixing dedicated and shared processors. PLM will move resources in the group as setup in the PLM profiles.
B. PLM handles memory, dedicated and shared processor partitions. All the partitions in a group must be of the same processor type. PLM moves I/O resources between partitions based on PLM policy files.
C. PLM handles memory, dedicated and shared processor partitions. The policy file, once loaded, is static and has no knowledge of workload on the managed partitions. PLM is supported for partitions that are running AIX 5.2 or i5O
D. All of the partitions in a group must be the same type, either all dedicated processor partitions or shared processor partitions. One PLM Server can manage multiple groups of partitions. PLM does not move resources between groups.
中年男性，因腹胀不适2月余伴低热就诊。体检：神清，一般情况可，巩膜轻度黄染，肝肋下未及，脾肋下2指，肝功能A/G1.25，白蛋白30g/L。追问病史，10年前曾患乙肝，既往无呕血、黑便史，胃镜示食管胃底静脉曲张，B超示腹水（+）。患者最有可能合并的症状是（）。
A. 双下肢散在出血点
B. 右锁骨上淋巴结肿大
C. 内痔
D. 杵状指
E. 颈静脉怒张
男患60岁，慢支肺气肿20年，冠心病史5年，呼吸困难加重2天，意识障碍l小时来诊。查体：浅昏迷。呼吸困难。口唇发绀，球结膜轻度水肿，BPl70／110mmHg.双肺散在干啰音，中下部湿啰音，HRl28次／分，节律不整，肝略大。下肢浮肿（±）该患者抢救中需特别注意的是（）
A. 通畅呼吸道
B. 大量快速利尿剂
C. 迅速纠正心律失常
D. 强心利尿扩血管综合措施
E. 足量的止血药物及脑保护措施
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