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调车人员在车上看枕木（轨长12.5m铺18根枕木）观速时，接近看不清枕木根数时，车辆走行速度约（）km/h。

A. 15
B. 10
C. 12

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当RLC并联电路谐振时，其导纳角应（）。

A. 大于零
B. 小于零
C. 等于零
D. 不确定

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WebSphere Commerce has been successfully installed and tested. WebSphere Commerce Analyzer has been installed and the extraction programs have run with no errors but there is no data in any reports when viewed from the WebSphere Commerce Accelerator. What could be the cause of this problem？（）

A. The WebSphere Commerce application server was not started
B. The web server was not started
C. SSL has not been configured on the web server
D. The appropriate listeners were not enabled in Configuration Manager
E. The database server was not started

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观赏赛艇比赛别有情趣，当运动员随活动座板前俯后仰，并挥桨划破湖水飞速前进时，它与自然景观交相辉映。

A. 正确
B. 错误

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整流二级管与稳压二极管都能起整流作用。

A. 正确
B. 错误

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调车人员在车上看枕木（轨长12.5m铺18根枕木）观速时，接近看不清枕木根数时，车辆走行速度约（）km/h。

A. 15 B. 10 C. 12

当RLC并联电路谐振时，其导纳角应（）。

WebSphere Commerce has been successfully installed and tested. WebSphere Commerce Analyzer has been installed and the extraction programs have run with no errors but there is no data in any reports when viewed from the WebSphere Commerce Accelerator. What could be the cause of this problem？（）

观赏赛艇比赛别有情趣，当运动员随活动座板前俯后仰，并挥桨划破湖水飞速前进时，它与自然景观交相辉映。

整流二级管与稳压二极管都能起整流作用。

A. 15
B. 10
C. 12