Horner综合征表现为
A．瞳孔散大
B．瞳孔缩小
C．眼裂变小
D．眼裂变大
E．眼球内陷
参考答案：B,C,E
-__________ has your friend been to the Great Wall?
-Twice.[ ]
A. How often
B. What time
C. How long
D. How many times
在平台上组装产品时，平台既可作为装配基准，也可作为测量基准。( )
