限位开关应经常检查调整，保证其工作准确可靠。
参考答案：对
The medicine may help with your illness, but it may make you _____ , so you must be careful not to drive a car after taking such a medicine.
A．healthy
B．strange
C．tired
D．Bored
钟面式百分表的传动机构能将测杆的微小位移进行______，这给读数带来许多方便。
A．缩小
B．放大
C．相同
