【单选题】the grand graduation ceremony ,which thousands of the graduates _____ last night, was more succe
A.
30. the grand graduation ceremony ,which thousands of the graduates _____ last night, was more successful than we had expected. A.appointed
【简答题】当电流、电压为关联参考方向时,____可表示为电路中通过电阻的电流,与电阻两端所加的电压成正比,与电阻成反比 。
【单选题】The graduation ceremony, which thousands of graduates _________ last night, was a success.
【简答题】They held an opening ceremony last month.(改被动句) An opening ceremony _______ ________ last month.
【单选题】To our relief, at last the opening ceremony of the sports meeting we had been looking forward to _____ on time. [ ]
【单选题】根据债券流通市场的组织形式,债券流通市场,又可进一步分为( )和场外交易市场,以及第三市场和第四市场几个层次。
【单选题】稳态概念起源于内环境的稳定,后来逐渐发展成为适用于整个生物科学的基本概念。对此不正确的理解是 [ ]
A.
人体内环境稳态具体是指内环境的温度、渗透压和酸碱度的恒定不变
B.
稳态下内环境的各种成分含量相对稳定,但成分不断更新
C.
人体、种群、生态系统等生命系统的各个层次均存在稳态
D.
生态系统之所以能维持相对稳定,是因为生态系统存在自我调节能力
【简答题】导体中电流与这导体两端 ( ) 成正比,与导体的 ( ) 成反比。 2、全电路欧姆定律的内容是:闭合电路中的电流与 ( )成正比, 与 ( )成反比。 3、已知电炉丝的电阻是44几,通过的电流是5A,则电炉所加的电压是 ( ) V 4、电源电动势E=4.5V,内阻r=0.5几,负载电阻R=4几,则电路中的电流I=...
【单选题】Last night, there were millions of people _______ the opening ceremony live on TV.