【简答题】请将下列英文句子翻译成中文:It is their plasticity at certain temperatures , which gives plastics their main advantage over many other materials .
【简答题】请将下列英文句子翻译成中文: He is quick to criticize his staff and hates to be quesitoned about decisions he has made.
【简答题】请将下列英文句子翻译成中文: (1) Efficiency and mechanical advantage are used to gauge the performance of mechanical machine .
【单选题】( )位于人格结构中的最底层,是人格结构中最隐秘而模糊的部分,它反映生理上的原始的欲望和冲动。
【简答题】Many scientists have been probing psychological problems( )
【判断题】超我反映的是人的原始欲望和冲动,是人的生物性的一面。
【单选题】中国古典园林中,借景的方法有多种,如借池塘中的鱼称为
【简答题】请将下列英文句子翻译成中文: The common metallic materials possess the metallic properties of luster , thermal conductivity, and electrical conductivity ;are relatively ductile; and some have go...
【单选题】For years scientists have been worried aboutthe ___________ of air pollution on the earth’s natural conditions.