检测近距离的塑料瓶,选用什么传感器好( )。
A. 电感式传感器
B. 电容式传感器
C. 磁性干簧开关
D. 霍尔式传感器
接近开关与被检测体的工作距离应设定在额定距离的2/3以内,且越近效果越好。
A. 对
B. 错
These experiments also show that optimists do much better in school and at work. They regularly exceed the predictions of aptitude tests.
A. 敬畏
B. 天赋
C. 绝望
D. 解雇
His heart is overflowing with awe and gratitude for the beauty of her, the perfection.
A. 敬畏
B. 天赋
C. 绝望
D. 解雇