【多选题】下列说法属于液压传动优点的是( )。
A.
能实现大范围的无极调速,调速范围可达2000:1
【多选题】We can still do lots of things to learn a language such as_____, even when we are not around native speakers.
D.
learning lyrics of songs
【判断题】液压传动装置工作平稳,能方便的实现无极调速,但不能快速启动、制动和频繁换向。
【判断题】对于一些具有有限个复数解的多项式方程组而言,我们已经找到解的方法,并且也已充分了解这种系统的行为
【单选题】电动液压操舵装置的特点是__。1传动平稳,噪声较小;2操作方便,易于遥控;3能实现无极调速及具有较高的可靠性;4现代海船广泛使用。
【判断题】We can still do lots of things to learn a language such as watching TV, mimicing characters even when we are not around native speakers.
【单选题】听力原文:W: Good morning.What can I do for you? M: Good morning.I've come for some advice. My nephew and I think it's time for as to fix up our summer holiday in abroad.It's nearly February,after all.But ...
A.
He has booked a tour with the agent.
B.
His nephew wants to book a tour with the agent.
C.
He wants to have some advice from the agent.
D.
He wants to pay the tour to France.
【简答题】听句子,选择适当答语,每个句子仅读一遍。 ( )1. A. We go to school on Monday. B. We go to school on Friday. C. We go to school on weekdays. ( )2. A. The computer can't give us much help. B. We can do lots of thing...