题目内容

18世纪欧洲歌剧发展的中心在意大利的()城,主要代表人物为(),他对于歌剧的贡献有:将宣叙调区分为清宣叙调和();创用()咏叹调;确立了()的形式,由()三段构成,是后来重要的器乐曲交响曲的先驱;运用的乐队编制,以弦乐四部为中心。

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患者女,65岁,因“颈后酸痛不适3年,双手麻木1年,持筷困难1个月”来诊。近1个月出现胸部压迫感,走路无力。查体:四肢肌张力增高,前臂痛觉减退,双霍夫曼征(+),巴宾斯基征(+)。颈椎X线片:C5~C6椎间隙狭窄。该患者需要的进一步检查是()

A. 颈椎MRI
B. 颈椎CT
C. 脊髓造影
D. 上肢肌电图
E. 诱发电位

Router R1 has a connected route for 10.1.1.0/24 off interface Fa0/0. Interface Fa0/0 has been enabled for OSPF due to a router ospf 1 and network 10.0.0.0 0.0.0.255 area 0 command. R1 also has EIGRP configured, with the redistribute ospf 1 metric 1000 100 10 1 1500 command configured under EIGRP. Which one of the following is true?()

A. R1 will not redistribute 10.1.1.0/24 into EIGRP, because R1 knows it as a connected route and not as an OSPF route.
B. For any OS PF routes redistributed into EIGRP, the metric components includea value equivalent to 1 Mbps of bandwidth.
C. For any OSPF routes redistributed into EIGRP, the metric components include a value equivalent to 100 microseconds of delay.
D. No subnets of network 10.0.0.0 will be redistributed due to the omission of the subnets parameter.

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国家图书馆的作用有哪些?

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