单项选择题 单相桥式整流电路变压器次级电压为10V(有效值),则每个整流二极管所承受的最大反向电压为( )。A. 10VB. , 14.14VC. 20VD. 28.28V

单项选择题 According to the passage， which of the following factors might spoil the tourist’s fun at Mediterranean resorts and beaches ？ A. Polluted water B. Crowded buses C. Traffic jams D. Rainy weather

判断题 In English, most passive sentences use the passive voice, whose syntactic structure is subject +be +the past participle of the verb. A、正确 B、错误

多项选择题 4. 下列对唐宋时期舆论传播活动描述正确的有：（） A. 随着雕版印刷术的普及，出版领域迎来新的发展面貌，媒体舆论逐渐进入历史视野。 B. 唐代政府即有提供给地方官员，以了解中央诏令、信息的邸报； C. 宋代，传播媒介进一步繁荣，衍生出判报、小报、边报、榜文等多种形式。这些媒介多承载时政消息，虽由官方主导，以官吏为主要受众，其出发点乃是履行朝廷舆论监督之效力； D. 新闻泄露与私人刻报事件时有发生，客观上促进了整体舆论环境的多元化。 E. 宋廷有尊重文人，不杀大臣之意识，这为知识分子争取言论自由，开展舆论传播创造了有利条件。

单项选择题 This is most probably from a ______: We first detected speech in the audio with automatic audio processing algorithms, and split speech into short, easy to transcribe segments. Then sequences of speech segments were loaded into a specially designed transcription interface which synchronizes audio playback with a transcriber’s speed of transcription automatically. Five transcribers listened and transcribed the speech segments.