【单选题】电源的电动势为4.5V,内电阻为0.50Ω,外电路接一个4.0Ω的电阻,这时电源两端的电压为( ).
【简答题】己知电源的电动势为4.5 V,内阻为0.50,外电路的电阻为4.0Ω,求路端电压。
【单选题】The president's ______ remarks in his speech met with a lot of attacks from other countries.
【简答题】单词拼写。 根据下列句子及所给汉语注释,在句子右边的横线上写出空缺处各 单词的正确形式。(每空只写一词) 1.Tom was _____(羞愧) of having lied to his parents. 2.Thank you for _____(提供) to help, but I can manage it myself. 3.The story is written by an ____...
【单选题】在下列哪个时代,信息安全的思想是通过密码技术解决通信保密,保证数据的保密性和完整性,同时主要关注传输过程中的数据保护
【单选题】电源的电动势为4.5V,内电阻为0.50Ω,外电路接一个4.0Ω的电阻,这时电源两端的电压为
【单选题】The president's ______ remarks in his speech met with a lot of attacks from other countries.
【单选题】电源的电动势为4.5V,内电阻为0.50,外电路接一个4.09的电阻,这时电源两 端的电压为( )。
【单选题】电源的电动势为4.5V,内电阻为0.50Ω,外电路接一个4.0Ω的电阻,这时电源两端的电压为