【简答题】一个带有无重量无摩擦活塞的绝热圆筒内充入理想气体,圆筒内壁上绕有电炉丝。通电时气体缓慢膨胀,设为等压过程。若(1)选理想气体为系统;(2)选电阻丝和理想气体为系统。两过程的Q、△H分别是等于、小于还是大于零?
【判断题】对“三口之家”来说,这台车的配置很实用。
【简答题】I ________ both happiness and sadness in the past 10 years when I was abroad. create hibernate disappear survive allow hit experience discover block destroy
【简答题】accomplish advice clue create divide 0ption priority project responsibility share magical suggest Words have a_______ power. They can bring either the greatest...
【简答题】Fill in the blanks with the proper forms of the words given. (refined, questioning/questionable, visualize, marvel, engagingly, withdraw) 6. The focused on employee___________ strategies to crea...
【判断题】绝热圆筒上有一理想的(无摩擦无重量的)绝热活塞内有一定量理想气体,内壁绕有电阻丝,当通电时气体慢慢膨胀,以气体和电阻丝为体系,则 。
【判断题】DTMF信令是带内信令,该信令不能通过数字交换网络。
【判断题】许多无分电器点火系统将点火控制器控制电路直接合入电子控制单元ECU。
【判断题】“奉之弥繁,侵之愈急”一句意为:(诸侯)送给秦的土地越多,(秦国)侵略诸侯也越急。奉:奉送。弥、愈:都是“更加”的意思。繁:多。