以苯二氮卓类药物治疗焦虑症时，下述哪项说法不对（） 一般从小剂量开始。 达最佳有效治疗量后，维持6～8周后，再逐渐停药。 停药过程不应少于2周，以防症状反跳。 合并使用β-受体阻滞剂时，应考虑有无哮喘史等禁忌情况。 密切观察用药后的疗效、副作用。
润滑油主要理化指标
What three in combination are factors that can cause four-wave mixing in fiber-optic cables? （）(Choose three.) low optical power。 high optical power。 few optical channels。 many optical channels。 low chromatic dispersion。 high chromatic dispersion。 too much power differential in the optical channel。
Refer to the exhibit. Asymmetric broadband service with significantly greater downstream bandwidth is recommended for Teleworker deployment. Which reason is the most accurate?（） Most ISPs do not provide QoS for residential broadband. Asymmetric bandwidth reduces the chance of downstream congestion when traffic from Internet sites competes for bandwidth with IP voice traffic.。 Additional downstream bandwidth compensates for insufficient upstream bandwidth. The aggregate bandwidth provides the same result. 。 The additional bandwidth is needed to access more than one site. Most HTTP traffic is downstream. 。 The additional downstream bandwidth allows the Enterprise VPN device to send the IP voice packets much faster, allowing them to reach the Teleworker network with less latency.。
城市客流的基本特点有？
包含在DataSet集合中的集合是（）。
