【判断题】由于气候环境的原因,中国战车面临的首要问题是解决车辆的通行能力和越野能力。
【单选题】Which of the following statements is NOT true?
A.
Elephants can be graceful.
B.
Tigers are too erous to be trained.
C.
Animals which are natural enemies can be trained to live together.
D.
Animals can become interested in their tricks.
【判断题】由于气候环境的原因,中国战车面临的首要问题是解决车辆的通行能力和越野能力。
【简答题】在数据库的三级模式中,视图属于外模式,表属于( )
【判断题】当软绳受两个等值反向的压力时,可以平衡。 ( )
【判断题】二力构件是指两端用铰链连接并且只受两个力作用的构件。( )
【单选题】The students are _______ to know that elephants can walk quietly on tiptoe.