The purpose of the simulation is to estimate mean vehicle queue lengths and delays for various vehicle ______and train frequenci

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问题 The purpose of the simulation is to estimate mean vehicle queue lengths and delays for various vehicle ______and train frequencies.

选项 A、popularity
B、densities
C、intensities
D、prosperity

答案B

解析 逻辑关系题:并列。所填词与frequencies形成结构和语义上的并列关系,并表示vehicle queue lengths and delays的原因,因此答案选[B]densities“密集,密度”。[A]popularity“流行,普及”;[C]intensities“强度,剧烈”;[D]prosperity“繁荣,昌盛”。
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