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简述教育学的研究对象。

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固定化酶在医疗上的应用

县级以上地方人民政府卫生行政部门在履行监督检查职责时,发现被传染病病原体污染的公共饮用水源、食品以及相关物品,如不及时采取控制措施可能导致传染病传播、流行的,可以采取封存食品以及相关物品或者暂停销售的临时控制措施,但不能封闭公共饮用水源。 请将上述错误语句表达正确。

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

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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