题目内容

清朝政府为巩固和发展统一的多民族国家，采取的措施有（）①实行三省六部制②在西南少数民族地区推行改土归流③设立驻藏大臣④平定准噶尔、回部贵族叛乱

A. ①②③
B. ②③④
C. ①②④
D. ①③④

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A cluster indicates that a remote site has failed. What facilities exist in HACMP/XD：HAGeo to ensure that the failure is not just a TCP/IP communication failure？（）

A. Electronic Service Agent software provides a redundant heartbeat between sites.
B. A non-IP network and Dial Back Fail Safe provide redundant heartbeats between sites.
C. The GeoMirror Devices provide a link validation facility that guarantees the validity between sites.
D. The Site Notification Daemon maintains a heartbeat between sites via short haul Modems/line drivers and dark fibre.

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