例1:( 多选 ) 如图 4 所示,下列关于机械能是否守恒的判断正确的是 ( ) A. 甲图中,物体将弹簧压缩的过程中,物体和弹簧组成的系统机械能守恒 ( 不计空气阻力 ) B. ,物体在大小等于摩擦力的沿斜面向下的拉力 F 作用下沿斜面下滑时,物体机械能守恒 C. 丙图中,物体沿斜面匀速下滑的过程中,物体机械能守恒 D. ,斜面光滑,物体在斜面上下滑的过程中,物体机械能守恒
【简答题】(Short-answer Question) Show a complete timing diagram including the parallel outputs for the shift register SRG 4 in figure below. Use the waveform (a) and (b) as shown with the register initially cl...
【单选题】Use the below information to answer the following question. ,where A = 4.0. Based on the utility function above, which investment would you select?