【简答题】English is not only the most useful language in the world, but it is also one of the easiest languages to learn and to use.
【判断题】双级蒸汽压缩式制冷循环,使得每一级的压力比控制在压缩机正常运行的工况范围内。( )
【单选题】aft accessory compartment
【简答题】The only __________ is that the software is available only in English and the accent is British or American.
【简答题】Speaking English is not only about using proper grammar, but also about understanding the culture. Here is some important advice to remember when speaking English in the United States. ◆Americans have...