机动车检验合格标志、保险标志应当粘贴在机动车前窗（）角。
参考答案：右上
The question for them was to find out whether bees could tell each other the exact position of a feeding place.
A．left
B．leaving
C．remained
D．remaining
机电设备完好标准对三角带的要求，三角带表面不得高出轮槽（）mm
A、0.5
B、1
C、2
