A financial customer has three data centers that are approximately five kilometers apart. Their SAP application data needs to be kept synchronized within 10 milliseconds between the three sites. Which of the following solutions satisfies the customer's recovery time objective?()
A. DS8700 systems at each site running Metro Mirror
B. DS5300 systems at each site running Metro Mirror
C. DS5100 systems at each site running Global Mirror
D. XIV systems at each site running synchronous mirroring
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检修方案应根据()来制定.
A. 检修时间
B. 检修人员
C. 检修时间和检修项目
D. 检修项目
技术商品的特点()。
A. 先进性和实用性
B. 单一性和共享性
C. 不等价交换性和交换的增值性
D. 信息性和垄断性
下列哪项应考虑癌性胸水()。
A. 胸水清澈、静置不凝固,比重<1.016-1.018,以淋巴细胞和间皮细胞为主
B. 胸水是淡血色,红细胞,10×1012/L
C. 胸水淡黄绿色,比重,1.018,白细胞高于500×109/L,pH<7.30,Rivalta试验阳性
D. 胸水有臭味,比重>1.018,白细胞为10×109/L,PH<7.00,Rivalta试验阳性
E. 血性胸水,红细胞,5.0×1012/L,胆固醇含量增高,LDH>500IU/L