题目内容

客流的主要组成要素是流量、流向和流速。(部竞赛题《管规》)

A. 正确
B. 错误

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During BGP configuration on a router that has peered with other BGP speakers, the BGP command aggregate-a ddress 172.32.0.0 255.255.252.0 is issued. However, the peers do not receive this aggregate network in BGP advertisements. Also, the router does not have this aggregate network in its BGP table. Which option indicates a possible reason this command did not cause the router to advertise the aggregate network to its peers?()

A. Interface NULL 0 is likely shutdown.
B. The next hop IP address must be a loopback address.
C. The BGP command no auto - summary is missing.
D. The BGP command no synchronization is missing.
E. Subnets of 172.32.0.0/22 do not exist in the BGP table.
F. The IGP running on this router does not have network 172.32.0.0/22 installed.

计算题: 二苯碳酰二肼分光光度法测定水中六价铬时,要配制浓度为50.0mg/L的C.r(VI)标准溶液1000ml,应称取多少克K2C.r2O7?(已知MK2C.r2O7=294.2MC.r=51.996)

象牙的横截面纹理是:()。

A. 同心圆状
B. 引擎纹
C. 放射状
D. 波纹状

对油船,安装之后的防止油污的检验尚应包括的附加要求是什么?

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