【判断题】移位寄存器指令中,EN为使能输人端,连接移位脉冲信号,每次使能有效时,整个移位寄存器移动1位。
【单选题】The findings of the experiment show that______.
A.
errors are more likely when a referee keeps close to the ball
B.
the farther the referee is from the incident, the fewer the errors
C.
the more slowly the referee runs, the more likely will errors occur
D.
errors are less likely when a referee stays in one spot
【单选题】所列化合物彻底水解后获得同一单糖的是( )
【判断题】世界数字图书馆只能搜索电子书。( )A. √ B. ×
【单选题】( )是指对农产品一次性的涉及农产品内在成分改变的加工。