【单选题】当第二次按下程序段跳过按钮,指示灯灭,表示取消“程序段跳过”机能。此时程序中的“/”标记( ),程序中所有程序段将被依次执行。
【单选题】A bee that has found honey is able to ______ to other bees the information they need in order to collect the honey.
【单选题】通过改变回路中流量控制元件的流通截面积的大小来控制流入执行元件或者自执行元件流出的流量,以调节其运动速度的是()
【单选题】通过改变回路中变量泵或者变量马达的排量来调节执行元件的运动速度的是()
【多选题】钢轨探伤仪通常具有以下几种角度的探头()
【单选题】There was a _______ on the board saying the class has bee cancelled
【单选题】—What's wrong with your face? —A bee has stung it and it is ________. [ ]