【判断题】在空压机的出风管上装有一个止回阀,其作用是当空压机停止工作时,防止空压机的压缩空气向总风缸逆流。()
【判断题】The Grand Buddha at Leshan is near a cliff
【单选题】where is the Grand Buddha?
A.
at Duanhuang in Gansu Province
B.
at Datong in Shanxi Province
C.
at Leshan in Sichuan Province
D.
at Luoyang in Henan Province
【判断题】若在单个集成运放中,将反馈引到反相输入端则为负反馈;反之,则为正反馈。
【单选题】be unable to do的同义词是
【单选题】对行下标由1到50、列下标由1到80的二维数组a,若该数组的起始地址为2000且每个元素占2个存储单元,并以行为主序顺序存储,则元素a[45][68]的存储地址为 ( )
【单选题】276,通过市场调查发现,保健品市场的兴起是由于人们价值观念变化引起的,这一因素属于()
【单选题】Which of the following is NOT TRUE about the Grand Buddha at Leshan
A.
It is in Sichuan Province
B.
It is one of the largest Buddhas in China
C.
It is at the place where Dadu and Min River flow
D.
Its height is 71 meters